diff --git a/change/@react-native-windows-automation-channel-9a3d3918-e883-419d-bebe-513403a6ab7d.json b/change/@react-native-windows-automation-channel-9a3d3918-e883-419d-bebe-513403a6ab7d.json
new file mode 100644
index 00000000000..bef72ff04a8
--- /dev/null
+++ b/change/@react-native-windows-automation-channel-9a3d3918-e883-419d-bebe-513403a6ab7d.json
@@ -0,0 +1,7 @@
+{
+  "type": "patch",
+  "comment": "Use hermes-windows version 0.0.0-2604.21001-94aa5e1d (#16019)",
+  "packageName": "@react-native-windows/automation-channel",
+  "email": "vmorozov@microsoft.com",
+  "dependentChangeType": "patch"
+}
diff --git a/change/react-native-windows-aa6d9881-59cb-49f5-94c8-45793b45e63e.json b/change/react-native-windows-aa6d9881-59cb-49f5-94c8-45793b45e63e.json
new file mode 100644
index 00000000000..cdb7bde3342
--- /dev/null
+++ b/change/react-native-windows-aa6d9881-59cb-49f5-94c8-45793b45e63e.json
@@ -0,0 +1,7 @@
+{
+  "type": "patch",
+  "comment": "Use hermes-windows version 0.0.0-2604.21001-94aa5e1d (#16019)",
+  "packageName": "react-native-windows",
+  "email": "vmorozov@microsoft.com",
+  "dependentChangeType": "patch"
+}
diff --git a/packages/@react-native-windows/automation-channel/windows/AutomationChannel/packages.chakra.lock.json b/packages/@react-native-windows/automation-channel/windows/AutomationChannel/packages.chakra.lock.json
index bffe46cffed..9268b5bb0eb 100644
--- a/packages/@react-native-windows/automation-channel/windows/AutomationChannel/packages.chakra.lock.json
+++ b/packages/@react-native-windows/automation-channel/windows/AutomationChannel/packages.chakra.lock.json
@@ -29,8 +29,8 @@
       },
       "Microsoft.JavaScript.Hermes": {
         "type": "Transitive",
-        "resolved": "0.0.0-2511.7001-d7ca19b3",
-        "contentHash": "/EGy/gbTWpFZPZ4Z81QxbGQxpZhqiOE3qrnSokZRgXAyHivl15s7zZkRLOy9daDmVyEfanq7YBCOMi0ha58uQA=="
+        "resolved": "0.0.0-2604.21001-94aa5e1d",
+        "contentHash": "8eHA3O043jIeK7E1gJbzgsdujaDTIBwLSl6pZj7CdQl+ryFqaW88XVU9ogWJPxk5lR2T4cU/OlEJfZynqoyYew=="
       },
       "Microsoft.SourceLink.Common": {
         "type": "Transitive",
@@ -72,7 +72,7 @@
         "dependencies": {
           "Common": "[1.0.0, )",
           "Folly": "[1.0.0, )",
-          "Microsoft.JavaScript.Hermes": "[0.0.0-2511.7001-d7ca19b3, )",
+          "Microsoft.JavaScript.Hermes": "[0.0.0-2604.21001-94aa5e1d, )",
           "Microsoft.SourceLink.GitHub": "[1.1.1, )",
           "Microsoft.UI.Xaml": "[2.8.0, )",
           "ReactCommon": "[1.0.0, )",
diff --git a/packages/@react-native-windows/automation-channel/windows/AutomationChannel/packages.lock.json b/packages/@react-native-windows/automation-channel/windows/AutomationChannel/packages.lock.json
index bffe46cffed..9268b5bb0eb 100644
--- a/packages/@react-native-windows/automation-channel/windows/AutomationChannel/packages.lock.json
+++ b/packages/@react-native-windows/automation-channel/windows/AutomationChannel/packages.lock.json
@@ -29,8 +29,8 @@
       },
       "Microsoft.JavaScript.Hermes": {
         "type": "Transitive",
-        "resolved": "0.0.0-2511.7001-d7ca19b3",
-        "contentHash": "/EGy/gbTWpFZPZ4Z81QxbGQxpZhqiOE3qrnSokZRgXAyHivl15s7zZkRLOy9daDmVyEfanq7YBCOMi0ha58uQA=="
+        "resolved": "0.0.0-2604.21001-94aa5e1d",
+        "contentHash": "8eHA3O043jIeK7E1gJbzgsdujaDTIBwLSl6pZj7CdQl+ryFqaW88XVU9ogWJPxk5lR2T4cU/OlEJfZynqoyYew=="
       },
       "Microsoft.SourceLink.Common": {
         "type": "Transitive",
@@ -72,7 +72,7 @@
         "dependencies": {
           "Common": "[1.0.0, )",
           "Folly": "[1.0.0, )",
-          "Microsoft.JavaScript.Hermes": "[0.0.0-2511.7001-d7ca19b3, )",
+          "Microsoft.JavaScript.Hermes": "[0.0.0-2604.21001-94aa5e1d, )",
           "Microsoft.SourceLink.GitHub": "[1.1.1, )",
           "Microsoft.UI.Xaml": "[2.8.0, )",
           "ReactCommon": "[1.0.0, )",
diff --git a/packages/@react-native-windows/automation-channel/windows/AutomationChannel/packages.newarch.lock.json b/packages/@react-native-windows/automation-channel/windows/AutomationChannel/packages.newarch.lock.json
index 2c84784c817..9a38d53f816 100644
--- a/packages/@react-native-windows/automation-channel/windows/AutomationChannel/packages.newarch.lock.json
+++ b/packages/@react-native-windows/automation-channel/windows/AutomationChannel/packages.newarch.lock.json
@@ -37,8 +37,8 @@
       },
       "Microsoft.JavaScript.Hermes": {
         "type": "Transitive",
-        "resolved": "0.0.0-2511.7001-d7ca19b3",
-        "contentHash": "/EGy/gbTWpFZPZ4Z81QxbGQxpZhqiOE3qrnSokZRgXAyHivl15s7zZkRLOy9daDmVyEfanq7YBCOMi0ha58uQA=="
+        "resolved": "0.0.0-2604.21001-94aa5e1d",
+        "contentHash": "8eHA3O043jIeK7E1gJbzgsdujaDTIBwLSl6pZj7CdQl+ryFqaW88XVU9ogWJPxk5lR2T4cU/OlEJfZynqoyYew=="
       },
       "Microsoft.SourceLink.Common": {
         "type": "Transitive",
@@ -85,7 +85,7 @@
         "dependencies": {
           "Common": "[1.0.0, )",
           "Folly": "[1.0.0, )",
-          "Microsoft.JavaScript.Hermes": "[0.0.0-2511.7001-d7ca19b3, )",
+          "Microsoft.JavaScript.Hermes": "[0.0.0-2604.21001-94aa5e1d, )",
           "Microsoft.SourceLink.GitHub": "[1.1.1, )",
           "Microsoft.WindowsAppSDK": "[1.7.250401001, )",
           "ReactCommon": "[1.0.0, )",
diff --git a/packages/e2e-test-app-fabric/windows/RNTesterApp-Fabric.Package/packages.lock.json b/packages/e2e-test-app-fabric/windows/RNTesterApp-Fabric.Package/packages.lock.json
index 4beaf682fb0..fec6c10e7bc 100644
--- a/packages/e2e-test-app-fabric/windows/RNTesterApp-Fabric.Package/packages.lock.json
+++ b/packages/e2e-test-app-fabric/windows/RNTesterApp-Fabric.Package/packages.lock.json
@@ -14,8 +14,8 @@
       },
       "Microsoft.JavaScript.Hermes": {
         "type": "Transitive",
-        "resolved": "0.0.0-2511.7001-d7ca19b3",
-        "contentHash": "/EGy/gbTWpFZPZ4Z81QxbGQxpZhqiOE3qrnSokZRgXAyHivl15s7zZkRLOy9daDmVyEfanq7YBCOMi0ha58uQA=="
+        "resolved": "0.0.0-2604.21001-94aa5e1d",
+        "contentHash": "8eHA3O043jIeK7E1gJbzgsdujaDTIBwLSl6pZj7CdQl+ryFqaW88XVU9ogWJPxk5lR2T4cU/OlEJfZynqoyYew=="
       },
       "Microsoft.SourceLink.Common": {
         "type": "Transitive",
@@ -85,7 +85,7 @@
         "dependencies": {
           "Common": "[1.0.0, )",
           "Folly": "[1.0.0, )",
-          "Microsoft.JavaScript.Hermes": "[0.0.0-2511.7001-d7ca19b3, )",
+          "Microsoft.JavaScript.Hermes": "[0.0.0-2604.21001-94aa5e1d, )",
           "Microsoft.SourceLink.GitHub": "[1.1.1, )",
           "Microsoft.WindowsAppSDK": "[1.7.250401001, )",
           "ReactCommon": "[1.0.0, )",
@@ -103,7 +103,7 @@
         "type": "Project",
         "dependencies": {
           "AutomationChannel": "[1.0.0, )",
-          "Microsoft.JavaScript.Hermes": "[0.0.0-2511.7001-d7ca19b3, )",
+          "Microsoft.JavaScript.Hermes": "[0.0.0-2604.21001-94aa5e1d, )",
           "Microsoft.ReactNative": "[1.0.0, )",
           "Microsoft.VCRTForwarders.140": "[1.0.2-rc, )",
           "Microsoft.WindowsAppSDK": "[1.7.250401001, )",
diff --git a/packages/e2e-test-app-fabric/windows/RNTesterApp-Fabric/packages.lock.json b/packages/e2e-test-app-fabric/windows/RNTesterApp-Fabric/packages.lock.json
index e120e4e050d..a782a59d0f9 100644
--- a/packages/e2e-test-app-fabric/windows/RNTesterApp-Fabric/packages.lock.json
+++ b/packages/e2e-test-app-fabric/windows/RNTesterApp-Fabric/packages.lock.json
@@ -10,9 +10,9 @@
       },
       "Microsoft.JavaScript.Hermes": {
         "type": "Direct",
-        "requested": "[0.0.0-2511.7001-d7ca19b3, )",
-        "resolved": "0.0.0-2511.7001-d7ca19b3",
-        "contentHash": "/EGy/gbTWpFZPZ4Z81QxbGQxpZhqiOE3qrnSokZRgXAyHivl15s7zZkRLOy9daDmVyEfanq7YBCOMi0ha58uQA=="
+        "requested": "[0.0.0-2604.21001-94aa5e1d, )",
+        "resolved": "0.0.0-2604.21001-94aa5e1d",
+        "contentHash": "8eHA3O043jIeK7E1gJbzgsdujaDTIBwLSl6pZj7CdQl+ryFqaW88XVU9ogWJPxk5lR2T4cU/OlEJfZynqoyYew=="
       },
       "Microsoft.VCRTForwarders.140": {
         "type": "Direct",
@@ -95,7 +95,7 @@
         "dependencies": {
           "Common": "[1.0.0, )",
           "Folly": "[1.0.0, )",
-          "Microsoft.JavaScript.Hermes": "[0.0.0-2511.7001-d7ca19b3, )",
+          "Microsoft.JavaScript.Hermes": "[0.0.0-2604.21001-94aa5e1d, )",
           "Microsoft.SourceLink.GitHub": "[1.1.1, )",
           "Microsoft.WindowsAppSDK": "[1.7.250401001, )",
           "ReactCommon": "[1.0.0, )",
diff --git a/packages/e2e-test-app/windows/RNTesterApp/packages.chakra.lock.json b/packages/e2e-test-app/windows/RNTesterApp/packages.chakra.lock.json
index 134fbb1efbf..57b7617442a 100644
--- a/packages/e2e-test-app/windows/RNTesterApp/packages.chakra.lock.json
+++ b/packages/e2e-test-app/windows/RNTesterApp/packages.chakra.lock.json
@@ -46,8 +46,8 @@
       },
       "Microsoft.JavaScript.Hermes": {
         "type": "Transitive",
-        "resolved": "0.0.0-2511.7001-d7ca19b3",
-        "contentHash": "/EGy/gbTWpFZPZ4Z81QxbGQxpZhqiOE3qrnSokZRgXAyHivl15s7zZkRLOy9daDmVyEfanq7YBCOMi0ha58uQA=="
+        "resolved": "0.0.0-2604.21001-94aa5e1d",
+        "contentHash": "8eHA3O043jIeK7E1gJbzgsdujaDTIBwLSl6pZj7CdQl+ryFqaW88XVU9ogWJPxk5lR2T4cU/OlEJfZynqoyYew=="
       },
       "Microsoft.Net.Native.Compiler": {
         "type": "Transitive",
@@ -197,7 +197,7 @@
         "dependencies": {
           "Common": "[1.0.0, )",
           "Folly": "[1.0.0, )",
-          "Microsoft.JavaScript.Hermes": "[0.0.0-2511.7001-d7ca19b3, )",
+          "Microsoft.JavaScript.Hermes": "[0.0.0-2604.21001-94aa5e1d, )",
           "Microsoft.SourceLink.GitHub": "[1.1.1, )",
           "Microsoft.UI.Xaml": "[2.8.0, )",
           "ReactCommon": "[1.0.0, )",
diff --git a/packages/e2e-test-app/windows/RNTesterApp/packages.lock.json b/packages/e2e-test-app/windows/RNTesterApp/packages.lock.json
index 2bc8e4de21e..01976d9682b 100644
--- a/packages/e2e-test-app/windows/RNTesterApp/packages.lock.json
+++ b/packages/e2e-test-app/windows/RNTesterApp/packages.lock.json
@@ -4,9 +4,9 @@
     "UAP,Version=v10.0.17763": {
       "Microsoft.JavaScript.Hermes": {
         "type": "Direct",
-        "requested": "[0.0.0-2511.7001-d7ca19b3, )",
-        "resolved": "0.0.0-2511.7001-d7ca19b3",
-        "contentHash": "/EGy/gbTWpFZPZ4Z81QxbGQxpZhqiOE3qrnSokZRgXAyHivl15s7zZkRLOy9daDmVyEfanq7YBCOMi0ha58uQA=="
+        "requested": "[0.0.0-2604.21001-94aa5e1d, )",
+        "resolved": "0.0.0-2604.21001-94aa5e1d",
+        "contentHash": "8eHA3O043jIeK7E1gJbzgsdujaDTIBwLSl6pZj7CdQl+ryFqaW88XVU9ogWJPxk5lR2T4cU/OlEJfZynqoyYew=="
       },
       "Microsoft.NETCore.UniversalWindowsPlatform": {
         "type": "Direct",
@@ -198,7 +198,7 @@
         "dependencies": {
           "Common": "[1.0.0, )",
           "Folly": "[1.0.0, )",
-          "Microsoft.JavaScript.Hermes": "[0.0.0-2511.7001-d7ca19b3, )",
+          "Microsoft.JavaScript.Hermes": "[0.0.0-2604.21001-94aa5e1d, )",
           "Microsoft.SourceLink.GitHub": "[1.1.1, )",
           "Microsoft.UI.Xaml": "[2.8.0, )",
           "ReactCommon": "[1.0.0, )",
diff --git a/packages/integration-test-app/windows/InteropTestModuleCS/packages.chakra.lock.json b/packages/integration-test-app/windows/InteropTestModuleCS/packages.chakra.lock.json
index b55f41a4e36..9aaf8b84a70 100644
--- a/packages/integration-test-app/windows/InteropTestModuleCS/packages.chakra.lock.json
+++ b/packages/integration-test-app/windows/InteropTestModuleCS/packages.chakra.lock.json
@@ -26,8 +26,8 @@
       },
       "Microsoft.JavaScript.Hermes": {
         "type": "Transitive",
-        "resolved": "0.0.0-2511.7001-d7ca19b3",
-        "contentHash": "/EGy/gbTWpFZPZ4Z81QxbGQxpZhqiOE3qrnSokZRgXAyHivl15s7zZkRLOy9daDmVyEfanq7YBCOMi0ha58uQA=="
+        "resolved": "0.0.0-2604.21001-94aa5e1d",
+        "contentHash": "8eHA3O043jIeK7E1gJbzgsdujaDTIBwLSl6pZj7CdQl+ryFqaW88XVU9ogWJPxk5lR2T4cU/OlEJfZynqoyYew=="
       },
       "Microsoft.Net.Native.Compiler": {
         "type": "Transitive",
@@ -178,7 +178,7 @@
         "dependencies": {
           "Common": "[1.0.0, )",
           "Folly": "[1.0.0, )",
-          "Microsoft.JavaScript.Hermes": "[0.0.0-2511.7001-d7ca19b3, )",
+          "Microsoft.JavaScript.Hermes": "[0.0.0-2604.21001-94aa5e1d, )",
           "Microsoft.SourceLink.GitHub": "[1.1.1, )",
           "Microsoft.UI.Xaml": "[2.8.0, )",
           "ReactCommon": "[1.0.0, )",
diff --git a/packages/integration-test-app/windows/InteropTestModuleCS/packages.lock.json b/packages/integration-test-app/windows/InteropTestModuleCS/packages.lock.json
index b55f41a4e36..9aaf8b84a70 100644
--- a/packages/integration-test-app/windows/InteropTestModuleCS/packages.lock.json
+++ b/packages/integration-test-app/windows/InteropTestModuleCS/packages.lock.json
@@ -26,8 +26,8 @@
       },
       "Microsoft.JavaScript.Hermes": {
         "type": "Transitive",
-        "resolved": "0.0.0-2511.7001-d7ca19b3",
-        "contentHash": "/EGy/gbTWpFZPZ4Z81QxbGQxpZhqiOE3qrnSokZRgXAyHivl15s7zZkRLOy9daDmVyEfanq7YBCOMi0ha58uQA=="
+        "resolved": "0.0.0-2604.21001-94aa5e1d",
+        "contentHash": "8eHA3O043jIeK7E1gJbzgsdujaDTIBwLSl6pZj7CdQl+ryFqaW88XVU9ogWJPxk5lR2T4cU/OlEJfZynqoyYew=="
       },
       "Microsoft.Net.Native.Compiler": {
         "type": "Transitive",
@@ -178,7 +178,7 @@
         "dependencies": {
           "Common": "[1.0.0, )",
           "Folly": "[1.0.0, )",
-          "Microsoft.JavaScript.Hermes": "[0.0.0-2511.7001-d7ca19b3, )",
+          "Microsoft.JavaScript.Hermes": "[0.0.0-2604.21001-94aa5e1d, )",
           "Microsoft.SourceLink.GitHub": "[1.1.1, )",
           "Microsoft.UI.Xaml": "[2.8.0, )",
           "ReactCommon": "[1.0.0, )",
diff --git a/packages/integration-test-app/windows/integrationtest/packages.chakra.lock.json b/packages/integration-test-app/windows/integrationtest/packages.chakra.lock.json
index f5ff796df24..139fbf83cbc 100644
--- a/packages/integration-test-app/windows/integrationtest/packages.chakra.lock.json
+++ b/packages/integration-test-app/windows/integrationtest/packages.chakra.lock.json
@@ -29,8 +29,8 @@
       },
       "Microsoft.JavaScript.Hermes": {
         "type": "Transitive",
-        "resolved": "0.0.0-2511.7001-d7ca19b3",
-        "contentHash": "/EGy/gbTWpFZPZ4Z81QxbGQxpZhqiOE3qrnSokZRgXAyHivl15s7zZkRLOy9daDmVyEfanq7YBCOMi0ha58uQA=="
+        "resolved": "0.0.0-2604.21001-94aa5e1d",
+        "contentHash": "8eHA3O043jIeK7E1gJbzgsdujaDTIBwLSl6pZj7CdQl+ryFqaW88XVU9ogWJPxk5lR2T4cU/OlEJfZynqoyYew=="
       },
       "Microsoft.Net.Native.Compiler": {
         "type": "Transitive",
@@ -199,7 +199,7 @@
         "dependencies": {
           "Common": "[1.0.0, )",
           "Folly": "[1.0.0, )",
-          "Microsoft.JavaScript.Hermes": "[0.0.0-2511.7001-d7ca19b3, )",
+          "Microsoft.JavaScript.Hermes": "[0.0.0-2604.21001-94aa5e1d, )",
           "Microsoft.SourceLink.GitHub": "[1.1.1, )",
           "Microsoft.UI.Xaml": "[2.8.0, )",
           "ReactCommon": "[1.0.0, )",
diff --git a/packages/integration-test-app/windows/integrationtest/packages.lock.json b/packages/integration-test-app/windows/integrationtest/packages.lock.json
index a99df8c35ca..19d2595bc11 100644
--- a/packages/integration-test-app/windows/integrationtest/packages.lock.json
+++ b/packages/integration-test-app/windows/integrationtest/packages.lock.json
@@ -4,9 +4,9 @@
     "native,Version=v0.0": {
       "Microsoft.JavaScript.Hermes": {
         "type": "Direct",
-        "requested": "[0.0.0-2511.7001-d7ca19b3, )",
-        "resolved": "0.0.0-2511.7001-d7ca19b3",
-        "contentHash": "/EGy/gbTWpFZPZ4Z81QxbGQxpZhqiOE3qrnSokZRgXAyHivl15s7zZkRLOy9daDmVyEfanq7YBCOMi0ha58uQA=="
+        "requested": "[0.0.0-2604.21001-94aa5e1d, )",
+        "resolved": "0.0.0-2604.21001-94aa5e1d",
+        "contentHash": "8eHA3O043jIeK7E1gJbzgsdujaDTIBwLSl6pZj7CdQl+ryFqaW88XVU9ogWJPxk5lR2T4cU/OlEJfZynqoyYew=="
       },
       "Microsoft.UI.Xaml": {
         "type": "Direct",
@@ -200,7 +200,7 @@
         "dependencies": {
           "Common": "[1.0.0, )",
           "Folly": "[1.0.0, )",
-          "Microsoft.JavaScript.Hermes": "[0.0.0-2511.7001-d7ca19b3, )",
+          "Microsoft.JavaScript.Hermes": "[0.0.0-2604.21001-94aa5e1d, )",
           "Microsoft.SourceLink.GitHub": "[1.1.1, )",
           "Microsoft.UI.Xaml": "[2.8.0, )",
           "ReactCommon": "[1.0.0, )",
diff --git a/packages/playground/windows/PlaygroundNativeModules/packages.lock.json b/packages/playground/windows/PlaygroundNativeModules/packages.lock.json
index bffe46cffed..9268b5bb0eb 100644
--- a/packages/playground/windows/PlaygroundNativeModules/packages.lock.json
+++ b/packages/playground/windows/PlaygroundNativeModules/packages.lock.json
@@ -29,8 +29,8 @@
       },
       "Microsoft.JavaScript.Hermes": {
         "type": "Transitive",
-        "resolved": "0.0.0-2511.7001-d7ca19b3",
-        "contentHash": "/EGy/gbTWpFZPZ4Z81QxbGQxpZhqiOE3qrnSokZRgXAyHivl15s7zZkRLOy9daDmVyEfanq7YBCOMi0ha58uQA=="
+        "resolved": "0.0.0-2604.21001-94aa5e1d",
+        "contentHash": "8eHA3O043jIeK7E1gJbzgsdujaDTIBwLSl6pZj7CdQl+ryFqaW88XVU9ogWJPxk5lR2T4cU/OlEJfZynqoyYew=="
       },
       "Microsoft.SourceLink.Common": {
         "type": "Transitive",
@@ -72,7 +72,7 @@
         "dependencies": {
           "Common": "[1.0.0, )",
           "Folly": "[1.0.0, )",
-          "Microsoft.JavaScript.Hermes": "[0.0.0-2511.7001-d7ca19b3, )",
+          "Microsoft.JavaScript.Hermes": "[0.0.0-2604.21001-94aa5e1d, )",
           "Microsoft.SourceLink.GitHub": "[1.1.1, )",
           "Microsoft.UI.Xaml": "[2.8.0, )",
           "ReactCommon": "[1.0.0, )",
diff --git a/packages/playground/windows/playground-composition.Package/packages.experimentalwinui3.lock.json b/packages/playground/windows/playground-composition.Package/packages.experimentalwinui3.lock.json
index 91629479526..c14da050ebf 100644
--- a/packages/playground/windows/playground-composition.Package/packages.experimentalwinui3.lock.json
+++ b/packages/playground/windows/playground-composition.Package/packages.experimentalwinui3.lock.json
@@ -14,8 +14,8 @@
       },
       "Microsoft.JavaScript.Hermes": {
         "type": "Transitive",
-        "resolved": "0.0.0-2511.7001-d7ca19b3",
-        "contentHash": "/EGy/gbTWpFZPZ4Z81QxbGQxpZhqiOE3qrnSokZRgXAyHivl15s7zZkRLOy9daDmVyEfanq7YBCOMi0ha58uQA=="
+        "resolved": "0.0.0-2604.21001-94aa5e1d",
+        "contentHash": "8eHA3O043jIeK7E1gJbzgsdujaDTIBwLSl6pZj7CdQl+ryFqaW88XVU9ogWJPxk5lR2T4cU/OlEJfZynqoyYew=="
       },
       "Microsoft.SourceLink.Common": {
         "type": "Transitive",
@@ -76,7 +76,7 @@
         "dependencies": {
           "Common": "[1.0.0, )",
           "Folly": "[1.0.0, )",
-          "Microsoft.JavaScript.Hermes": "[0.0.0-2511.7001-d7ca19b3, )",
+          "Microsoft.JavaScript.Hermes": "[0.0.0-2604.21001-94aa5e1d, )",
           "Microsoft.SourceLink.GitHub": "[1.1.1, )",
           "Microsoft.WindowsAppSDK": "[1.7.250127003-experimental3, )",
           "ReactCommon": "[1.0.0, )",
@@ -86,7 +86,7 @@
       "playground-composition": {
         "type": "Project",
         "dependencies": {
-          "Microsoft.JavaScript.Hermes": "[0.0.0-2511.7001-d7ca19b3, )",
+          "Microsoft.JavaScript.Hermes": "[0.0.0-2604.21001-94aa5e1d, )",
           "Microsoft.ReactNative": "[1.0.0, )",
           "Microsoft.VCRTForwarders.140": "[1.0.2-rc, )",
           "Microsoft.WindowsAppSDK": "[1.7.250127003-experimental3, )",
diff --git a/packages/playground/windows/playground-composition.Package/packages.lock.json b/packages/playground/windows/playground-composition.Package/packages.lock.json
index 01287f36a3b..f197351e60c 100644
--- a/packages/playground/windows/playground-composition.Package/packages.lock.json
+++ b/packages/playground/windows/playground-composition.Package/packages.lock.json
@@ -14,8 +14,8 @@
       },
       "Microsoft.JavaScript.Hermes": {
         "type": "Transitive",
-        "resolved": "0.0.0-2511.7001-d7ca19b3",
-        "contentHash": "/EGy/gbTWpFZPZ4Z81QxbGQxpZhqiOE3qrnSokZRgXAyHivl15s7zZkRLOy9daDmVyEfanq7YBCOMi0ha58uQA=="
+        "resolved": "0.0.0-2604.21001-94aa5e1d",
+        "contentHash": "8eHA3O043jIeK7E1gJbzgsdujaDTIBwLSl6pZj7CdQl+ryFqaW88XVU9ogWJPxk5lR2T4cU/OlEJfZynqoyYew=="
       },
       "Microsoft.SourceLink.Common": {
         "type": "Transitive",
@@ -76,7 +76,7 @@
         "dependencies": {
           "Common": "[1.0.0, )",
           "Folly": "[1.0.0, )",
-          "Microsoft.JavaScript.Hermes": "[0.0.0-2511.7001-d7ca19b3, )",
+          "Microsoft.JavaScript.Hermes": "[0.0.0-2604.21001-94aa5e1d, )",
           "Microsoft.SourceLink.GitHub": "[1.1.1, )",
           "Microsoft.WindowsAppSDK": "[1.7.250401001, )",
           "ReactCommon": "[1.0.0, )",
@@ -86,7 +86,7 @@
       "playground-composition": {
         "type": "Project",
         "dependencies": {
-          "Microsoft.JavaScript.Hermes": "[0.0.0-2511.7001-d7ca19b3, )",
+          "Microsoft.JavaScript.Hermes": "[0.0.0-2604.21001-94aa5e1d, )",
           "Microsoft.ReactNative": "[1.0.0, )",
           "Microsoft.VCRTForwarders.140": "[1.0.2-rc, )",
           "Microsoft.WindowsAppSDK": "[1.7.250401001, )",
diff --git a/packages/playground/windows/playground-composition/packages.experimentalwinui3.lock.json b/packages/playground/windows/playground-composition/packages.experimentalwinui3.lock.json
index 2d0a941ae0b..6ed3c2f4ad8 100644
--- a/packages/playground/windows/playground-composition/packages.experimentalwinui3.lock.json
+++ b/packages/playground/windows/playground-composition/packages.experimentalwinui3.lock.json
@@ -10,9 +10,9 @@
       },
       "Microsoft.JavaScript.Hermes": {
         "type": "Direct",
-        "requested": "[0.0.0-2511.7001-d7ca19b3, )",
-        "resolved": "0.0.0-2511.7001-d7ca19b3",
-        "contentHash": "/EGy/gbTWpFZPZ4Z81QxbGQxpZhqiOE3qrnSokZRgXAyHivl15s7zZkRLOy9daDmVyEfanq7YBCOMi0ha58uQA=="
+        "requested": "[0.0.0-2604.21001-94aa5e1d, )",
+        "resolved": "0.0.0-2604.21001-94aa5e1d",
+        "contentHash": "8eHA3O043jIeK7E1gJbzgsdujaDTIBwLSl6pZj7CdQl+ryFqaW88XVU9ogWJPxk5lR2T4cU/OlEJfZynqoyYew=="
       },
       "Microsoft.VCRTForwarders.140": {
         "type": "Direct",
@@ -86,7 +86,7 @@
         "dependencies": {
           "Common": "[1.0.0, )",
           "Folly": "[1.0.0, )",
-          "Microsoft.JavaScript.Hermes": "[0.0.0-2511.7001-d7ca19b3, )",
+          "Microsoft.JavaScript.Hermes": "[0.0.0-2604.21001-94aa5e1d, )",
           "Microsoft.SourceLink.GitHub": "[1.1.1, )",
           "Microsoft.WindowsAppSDK": "[1.7.250127003-experimental3, )",
           "ReactCommon": "[1.0.0, )",
diff --git a/packages/playground/windows/playground-composition/packages.lock.json b/packages/playground/windows/playground-composition/packages.lock.json
index 8d6f500a0f8..30d8d4e521e 100644
--- a/packages/playground/windows/playground-composition/packages.lock.json
+++ b/packages/playground/windows/playground-composition/packages.lock.json
@@ -10,9 +10,9 @@
       },
       "Microsoft.JavaScript.Hermes": {
         "type": "Direct",
-        "requested": "[0.0.0-2511.7001-d7ca19b3, )",
-        "resolved": "0.0.0-2511.7001-d7ca19b3",
-        "contentHash": "/EGy/gbTWpFZPZ4Z81QxbGQxpZhqiOE3qrnSokZRgXAyHivl15s7zZkRLOy9daDmVyEfanq7YBCOMi0ha58uQA=="
+        "requested": "[0.0.0-2604.21001-94aa5e1d, )",
+        "resolved": "0.0.0-2604.21001-94aa5e1d",
+        "contentHash": "8eHA3O043jIeK7E1gJbzgsdujaDTIBwLSl6pZj7CdQl+ryFqaW88XVU9ogWJPxk5lR2T4cU/OlEJfZynqoyYew=="
       },
       "Microsoft.VCRTForwarders.140": {
         "type": "Direct",
@@ -86,7 +86,7 @@
         "dependencies": {
           "Common": "[1.0.0, )",
           "Folly": "[1.0.0, )",
-          "Microsoft.JavaScript.Hermes": "[0.0.0-2511.7001-d7ca19b3, )",
+          "Microsoft.JavaScript.Hermes": "[0.0.0-2604.21001-94aa5e1d, )",
           "Microsoft.SourceLink.GitHub": "[1.1.1, )",
           "Microsoft.WindowsAppSDK": "[1.7.250401001, )",
           "ReactCommon": "[1.0.0, )",
diff --git a/packages/playground/windows/playground/packages.lock.json b/packages/playground/windows/playground/packages.lock.json
index cc375261404..32425cb3201 100644
--- a/packages/playground/windows/playground/packages.lock.json
+++ b/packages/playground/windows/playground/packages.lock.json
@@ -4,9 +4,9 @@
     "native,Version=v0.0": {
       "Microsoft.JavaScript.Hermes": {
         "type": "Direct",
-        "requested": "[0.0.0-2511.7001-d7ca19b3, )",
-        "resolved": "0.0.0-2511.7001-d7ca19b3",
-        "contentHash": "/EGy/gbTWpFZPZ4Z81QxbGQxpZhqiOE3qrnSokZRgXAyHivl15s7zZkRLOy9daDmVyEfanq7YBCOMi0ha58uQA=="
+        "requested": "[0.0.0-2604.21001-94aa5e1d, )",
+        "resolved": "0.0.0-2604.21001-94aa5e1d",
+        "contentHash": "8eHA3O043jIeK7E1gJbzgsdujaDTIBwLSl6pZj7CdQl+ryFqaW88XVU9ogWJPxk5lR2T4cU/OlEJfZynqoyYew=="
       },
       "Microsoft.UI.Xaml": {
         "type": "Direct",
@@ -73,7 +73,7 @@
         "dependencies": {
           "Common": "[1.0.0, )",
           "Folly": "[1.0.0, )",
-          "Microsoft.JavaScript.Hermes": "[0.0.0-2511.7001-d7ca19b3, )",
+          "Microsoft.JavaScript.Hermes": "[0.0.0-2604.21001-94aa5e1d, )",
           "Microsoft.SourceLink.GitHub": "[1.1.1, )",
           "Microsoft.UI.Xaml": "[2.8.0, )",
           "ReactCommon": "[1.0.0, )",
diff --git a/packages/sample-app-fabric/windows/SampleAppFabric.Package/packages.lock.json b/packages/sample-app-fabric/windows/SampleAppFabric.Package/packages.lock.json
index 7ae4a21c6cd..64c4d7bdcfa 100644
--- a/packages/sample-app-fabric/windows/SampleAppFabric.Package/packages.lock.json
+++ b/packages/sample-app-fabric/windows/SampleAppFabric.Package/packages.lock.json
@@ -14,8 +14,8 @@
       },
       "Microsoft.JavaScript.Hermes": {
         "type": "Transitive",
-        "resolved": "0.0.0-2511.7001-d7ca19b3",
-        "contentHash": "/EGy/gbTWpFZPZ4Z81QxbGQxpZhqiOE3qrnSokZRgXAyHivl15s7zZkRLOy9daDmVyEfanq7YBCOMi0ha58uQA=="
+        "resolved": "0.0.0-2604.21001-94aa5e1d",
+        "contentHash": "8eHA3O043jIeK7E1gJbzgsdujaDTIBwLSl6pZj7CdQl+ryFqaW88XVU9ogWJPxk5lR2T4cU/OlEJfZynqoyYew=="
       },
       "Microsoft.SourceLink.Common": {
         "type": "Transitive",
@@ -76,7 +76,7 @@
         "dependencies": {
           "Common": "[1.0.0, )",
           "Folly": "[1.0.0, )",
-          "Microsoft.JavaScript.Hermes": "[0.0.0-2511.7001-d7ca19b3, )",
+          "Microsoft.JavaScript.Hermes": "[0.0.0-2604.21001-94aa5e1d, )",
           "Microsoft.SourceLink.GitHub": "[1.1.1, )",
           "Microsoft.WindowsAppSDK": "[1.7.250401001, )",
           "ReactCommon": "[1.0.0, )",
@@ -93,7 +93,7 @@
       "sampleappfabric": {
         "type": "Project",
         "dependencies": {
-          "Microsoft.JavaScript.Hermes": "[0.0.0-2511.7001-d7ca19b3, )",
+          "Microsoft.JavaScript.Hermes": "[0.0.0-2604.21001-94aa5e1d, )",
           "Microsoft.ReactNative": "[1.0.0, )",
           "Microsoft.VCRTForwarders.140": "[1.0.2-rc, )",
           "Microsoft.WindowsAppSDK": "[1.7.250401001, )",
diff --git a/packages/sample-app-fabric/windows/SampleAppFabric/packages.lock.json b/packages/sample-app-fabric/windows/SampleAppFabric/packages.lock.json
index 2f5c4449fb0..c360534aab1 100644
--- a/packages/sample-app-fabric/windows/SampleAppFabric/packages.lock.json
+++ b/packages/sample-app-fabric/windows/SampleAppFabric/packages.lock.json
@@ -10,9 +10,9 @@
       },
       "Microsoft.JavaScript.Hermes": {
         "type": "Direct",
-        "requested": "[0.0.0-2511.7001-d7ca19b3, )",
-        "resolved": "0.0.0-2511.7001-d7ca19b3",
-        "contentHash": "/EGy/gbTWpFZPZ4Z81QxbGQxpZhqiOE3qrnSokZRgXAyHivl15s7zZkRLOy9daDmVyEfanq7YBCOMi0ha58uQA=="
+        "requested": "[0.0.0-2604.21001-94aa5e1d, )",
+        "resolved": "0.0.0-2604.21001-94aa5e1d",
+        "contentHash": "8eHA3O043jIeK7E1gJbzgsdujaDTIBwLSl6pZj7CdQl+ryFqaW88XVU9ogWJPxk5lR2T4cU/OlEJfZynqoyYew=="
       },
       "Microsoft.VCRTForwarders.140": {
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@@ -86,7 +86,7 @@
         "dependencies": {
           "Common": "[1.0.0, )",
           "Folly": "[1.0.0, )",
-          "Microsoft.JavaScript.Hermes": "[0.0.0-2511.7001-d7ca19b3, )",
+          "Microsoft.JavaScript.Hermes": "[0.0.0-2604.21001-94aa5e1d, )",
           "Microsoft.SourceLink.GitHub": "[1.1.1, )",
           "Microsoft.WindowsAppSDK": "[1.7.250401001, )",
           "ReactCommon": "[1.0.0, )",
diff --git a/packages/sample-apps/windows/SampleAppCPP/packages.lock.json b/packages/sample-apps/windows/SampleAppCPP/packages.lock.json
index 978ebaeb77b..133a1781bb0 100644
--- a/packages/sample-apps/windows/SampleAppCPP/packages.lock.json
+++ b/packages/sample-apps/windows/SampleAppCPP/packages.lock.json
@@ -10,9 +10,9 @@
       },
       "Microsoft.JavaScript.Hermes": {
         "type": "Direct",
-        "requested": "[0.0.0-2511.7001-d7ca19b3, )",
-        "resolved": "0.0.0-2511.7001-d7ca19b3",
-        "contentHash": "/EGy/gbTWpFZPZ4Z81QxbGQxpZhqiOE3qrnSokZRgXAyHivl15s7zZkRLOy9daDmVyEfanq7YBCOMi0ha58uQA=="
+        "requested": "[0.0.0-2604.21001-94aa5e1d, )",
+        "resolved": "0.0.0-2604.21001-94aa5e1d",
+        "contentHash": "8eHA3O043jIeK7E1gJbzgsdujaDTIBwLSl6pZj7CdQl+ryFqaW88XVU9ogWJPxk5lR2T4cU/OlEJfZynqoyYew=="
       },
       "Microsoft.UI.Xaml": {
         "type": "Direct",
@@ -186,7 +186,7 @@
         "dependencies": {
           "Common": "[1.0.0, )",
           "Folly": "[1.0.0, )",
-          "Microsoft.JavaScript.Hermes": "[0.0.0-2511.7001-d7ca19b3, )",
+          "Microsoft.JavaScript.Hermes": "[0.0.0-2604.21001-94aa5e1d, )",
           "Microsoft.SourceLink.GitHub": "[1.1.1, )",
           "Microsoft.UI.Xaml": "[2.8.0, )",
           "ReactCommon": "[1.0.0, )",
diff --git a/packages/sample-apps/windows/SampleAppCS/packages.lock.json b/packages/sample-apps/windows/SampleAppCS/packages.lock.json
index 5b29420dc81..17610e1483b 100644
--- a/packages/sample-apps/windows/SampleAppCS/packages.lock.json
+++ b/packages/sample-apps/windows/SampleAppCS/packages.lock.json
@@ -4,9 +4,9 @@
     "UAP,Version=v10.0.17763": {
       "Microsoft.JavaScript.Hermes": {
         "type": "Direct",
-        "requested": "[0.0.0-2511.7001-d7ca19b3, )",
-        "resolved": "0.0.0-2511.7001-d7ca19b3",
-        "contentHash": "/EGy/gbTWpFZPZ4Z81QxbGQxpZhqiOE3qrnSokZRgXAyHivl15s7zZkRLOy9daDmVyEfanq7YBCOMi0ha58uQA=="
+        "requested": "[0.0.0-2604.21001-94aa5e1d, )",
+        "resolved": "0.0.0-2604.21001-94aa5e1d",
+        "contentHash": "8eHA3O043jIeK7E1gJbzgsdujaDTIBwLSl6pZj7CdQl+ryFqaW88XVU9ogWJPxk5lR2T4cU/OlEJfZynqoyYew=="
       },
       "Microsoft.NETCore.UniversalWindowsPlatform": {
         "type": "Direct",
@@ -180,7 +180,7 @@
         "dependencies": {
           "Common": "[1.0.0, )",
           "Folly": "[1.0.0, )",
-          "Microsoft.JavaScript.Hermes": "[0.0.0-2511.7001-d7ca19b3, )",
+          "Microsoft.JavaScript.Hermes": "[0.0.0-2604.21001-94aa5e1d, )",
           "Microsoft.SourceLink.GitHub": "[1.1.1, )",
           "Microsoft.UI.Xaml": "[2.8.0, )",
           "ReactCommon": "[1.0.0, )",
diff --git a/packages/sample-apps/windows/SampleLibraryCPP/packages.lock.json b/packages/sample-apps/windows/SampleLibraryCPP/packages.lock.json
index bffe46cffed..9268b5bb0eb 100644
--- a/packages/sample-apps/windows/SampleLibraryCPP/packages.lock.json
+++ b/packages/sample-apps/windows/SampleLibraryCPP/packages.lock.json
@@ -29,8 +29,8 @@
       },
       "Microsoft.JavaScript.Hermes": {
         "type": "Transitive",
-        "resolved": "0.0.0-2511.7001-d7ca19b3",
-        "contentHash": "/EGy/gbTWpFZPZ4Z81QxbGQxpZhqiOE3qrnSokZRgXAyHivl15s7zZkRLOy9daDmVyEfanq7YBCOMi0ha58uQA=="
+        "resolved": "0.0.0-2604.21001-94aa5e1d",
+        "contentHash": "8eHA3O043jIeK7E1gJbzgsdujaDTIBwLSl6pZj7CdQl+ryFqaW88XVU9ogWJPxk5lR2T4cU/OlEJfZynqoyYew=="
       },
       "Microsoft.SourceLink.Common": {
         "type": "Transitive",
@@ -72,7 +72,7 @@
         "dependencies": {
           "Common": "[1.0.0, )",
           "Folly": "[1.0.0, )",
-          "Microsoft.JavaScript.Hermes": "[0.0.0-2511.7001-d7ca19b3, )",
+          "Microsoft.JavaScript.Hermes": "[0.0.0-2604.21001-94aa5e1d, )",
           "Microsoft.SourceLink.GitHub": "[1.1.1, )",
           "Microsoft.UI.Xaml": "[2.8.0, )",
           "ReactCommon": "[1.0.0, )",
diff --git a/packages/sample-apps/windows/SampleLibraryCS/packages.lock.json b/packages/sample-apps/windows/SampleLibraryCS/packages.lock.json
index b55f41a4e36..9aaf8b84a70 100644
--- a/packages/sample-apps/windows/SampleLibraryCS/packages.lock.json
+++ b/packages/sample-apps/windows/SampleLibraryCS/packages.lock.json
@@ -26,8 +26,8 @@
       },
       "Microsoft.JavaScript.Hermes": {
         "type": "Transitive",
-        "resolved": "0.0.0-2511.7001-d7ca19b3",
-        "contentHash": "/EGy/gbTWpFZPZ4Z81QxbGQxpZhqiOE3qrnSokZRgXAyHivl15s7zZkRLOy9daDmVyEfanq7YBCOMi0ha58uQA=="
+        "resolved": "0.0.0-2604.21001-94aa5e1d",
+        "contentHash": "8eHA3O043jIeK7E1gJbzgsdujaDTIBwLSl6pZj7CdQl+ryFqaW88XVU9ogWJPxk5lR2T4cU/OlEJfZynqoyYew=="
       },
       "Microsoft.Net.Native.Compiler": {
         "type": "Transitive",
@@ -178,7 +178,7 @@
         "dependencies": {
           "Common": "[1.0.0, )",
           "Folly": "[1.0.0, )",
-          "Microsoft.JavaScript.Hermes": "[0.0.0-2511.7001-d7ca19b3, )",
+          "Microsoft.JavaScript.Hermes": "[0.0.0-2604.21001-94aa5e1d, )",
           "Microsoft.SourceLink.GitHub": "[1.1.1, )",
           "Microsoft.UI.Xaml": "[2.8.0, )",
           "ReactCommon": "[1.0.0, )",
diff --git a/packages/sample-custom-component/windows/SampleCustomComponent/packages.experimentalwinui3.lock.json b/packages/sample-custom-component/windows/SampleCustomComponent/packages.experimentalwinui3.lock.json
index 7868af629ad..233893cdaca 100644
--- a/packages/sample-custom-component/windows/SampleCustomComponent/packages.experimentalwinui3.lock.json
+++ b/packages/sample-custom-component/windows/SampleCustomComponent/packages.experimentalwinui3.lock.json
@@ -37,8 +37,8 @@
       },
       "Microsoft.JavaScript.Hermes": {
         "type": "Transitive",
-        "resolved": "0.0.0-2511.7001-d7ca19b3",
-        "contentHash": "/EGy/gbTWpFZPZ4Z81QxbGQxpZhqiOE3qrnSokZRgXAyHivl15s7zZkRLOy9daDmVyEfanq7YBCOMi0ha58uQA=="
+        "resolved": "0.0.0-2604.21001-94aa5e1d",
+        "contentHash": "8eHA3O043jIeK7E1gJbzgsdujaDTIBwLSl6pZj7CdQl+ryFqaW88XVU9ogWJPxk5lR2T4cU/OlEJfZynqoyYew=="
       },
       "Microsoft.SourceLink.Common": {
         "type": "Transitive",
@@ -85,7 +85,7 @@
         "dependencies": {
           "Common": "[1.0.0, )",
           "Folly": "[1.0.0, )",
-          "Microsoft.JavaScript.Hermes": "[0.0.0-2511.7001-d7ca19b3, )",
+          "Microsoft.JavaScript.Hermes": "[0.0.0-2604.21001-94aa5e1d, )",
           "Microsoft.SourceLink.GitHub": "[1.1.1, )",
           "Microsoft.WindowsAppSDK": "[1.7.250127003-experimental3, )",
           "ReactCommon": "[1.0.0, )",
diff --git a/packages/sample-custom-component/windows/SampleCustomComponent/packages.lock.json b/packages/sample-custom-component/windows/SampleCustomComponent/packages.lock.json
index dcad46b0dcb..ea5082d8679 100644
--- a/packages/sample-custom-component/windows/SampleCustomComponent/packages.lock.json
+++ b/packages/sample-custom-component/windows/SampleCustomComponent/packages.lock.json
@@ -37,8 +37,8 @@
       },
       "Microsoft.JavaScript.Hermes": {
         "type": "Transitive",
-        "resolved": "0.0.0-2511.7001-d7ca19b3",
-        "contentHash": "/EGy/gbTWpFZPZ4Z81QxbGQxpZhqiOE3qrnSokZRgXAyHivl15s7zZkRLOy9daDmVyEfanq7YBCOMi0ha58uQA=="
+        "resolved": "0.0.0-2604.21001-94aa5e1d",
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       "Microsoft.SourceLink.Common": {
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@@ -85,7 +85,7 @@
         "dependencies": {
           "Common": "[1.0.0, )",
           "Folly": "[1.0.0, )",
-          "Microsoft.JavaScript.Hermes": "[0.0.0-2511.7001-d7ca19b3, )",
+          "Microsoft.JavaScript.Hermes": "[0.0.0-2604.21001-94aa5e1d, )",
           "Microsoft.SourceLink.GitHub": "[1.1.1, )",
           "Microsoft.WindowsAppSDK": "[1.7.250401001, )",
           "ReactCommon": "[1.0.0, )",
diff --git a/vnext/Desktop.ABITests/packages.experimentalwinui3.lock.json b/vnext/Desktop.ABITests/packages.experimentalwinui3.lock.json
index c3001c492bc..8882c99a3eb 100644
--- a/vnext/Desktop.ABITests/packages.experimentalwinui3.lock.json
+++ b/vnext/Desktop.ABITests/packages.experimentalwinui3.lock.json
@@ -32,8 +32,8 @@
       },
       "Microsoft.JavaScript.Hermes": {
         "type": "Transitive",
-        "resolved": "0.0.0-2511.7001-d7ca19b3",
-        "contentHash": "/EGy/gbTWpFZPZ4Z81QxbGQxpZhqiOE3qrnSokZRgXAyHivl15s7zZkRLOy9daDmVyEfanq7YBCOMi0ha58uQA=="
+        "resolved": "0.0.0-2604.21001-94aa5e1d",
+        "contentHash": "8eHA3O043jIeK7E1gJbzgsdujaDTIBwLSl6pZj7CdQl+ryFqaW88XVU9ogWJPxk5lR2T4cU/OlEJfZynqoyYew=="
       },
       "Microsoft.SourceLink.Common": {
         "type": "Transitive",
@@ -96,7 +96,7 @@
           "Common": "[1.0.0, )",
           "Folly": "[1.0.0, )",
           "FollyWin32": "[1.0.0, )",
-          "Microsoft.JavaScript.Hermes": "[0.0.0-2511.7001-d7ca19b3, )",
+          "Microsoft.JavaScript.Hermes": "[0.0.0-2604.21001-94aa5e1d, )",
           "Microsoft.SourceLink.GitHub": "[1.1.1, )",
           "Microsoft.Web.WebView2": "[1.0.2903.40, )",
           "Microsoft.WindowsAppSDK": "[1.7.250127003-experimental3, )",
@@ -108,7 +108,7 @@
       "react.windows.desktop.dll": {
         "type": "Project",
         "dependencies": {
-          "Microsoft.JavaScript.Hermes": "[0.0.0-2511.7001-d7ca19b3, )",
+          "Microsoft.JavaScript.Hermes": "[0.0.0-2604.21001-94aa5e1d, )",
           "Microsoft.SourceLink.GitHub": "[1.1.1, )",
           "React.Windows.Desktop": "[1.0.0, )",
           "ReactNative.V8Jsi.Windows": "[0.71.8, )",
diff --git a/vnext/Desktop.ABITests/packages.lock.json b/vnext/Desktop.ABITests/packages.lock.json
index 5f4ce5ee839..fb0e15eae01 100644
--- a/vnext/Desktop.ABITests/packages.lock.json
+++ b/vnext/Desktop.ABITests/packages.lock.json
@@ -32,8 +32,8 @@
       },
       "Microsoft.JavaScript.Hermes": {
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-        "resolved": "0.0.0-2511.7001-d7ca19b3",
-        "contentHash": "/EGy/gbTWpFZPZ4Z81QxbGQxpZhqiOE3qrnSokZRgXAyHivl15s7zZkRLOy9daDmVyEfanq7YBCOMi0ha58uQA=="
+        "resolved": "0.0.0-2604.21001-94aa5e1d",
+        "contentHash": "8eHA3O043jIeK7E1gJbzgsdujaDTIBwLSl6pZj7CdQl+ryFqaW88XVU9ogWJPxk5lR2T4cU/OlEJfZynqoyYew=="
       },
       "Microsoft.SourceLink.Common": {
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@@ -96,7 +96,7 @@
           "Common": "[1.0.0, )",
           "Folly": "[1.0.0, )",
           "FollyWin32": "[1.0.0, )",
-          "Microsoft.JavaScript.Hermes": "[0.0.0-2511.7001-d7ca19b3, )",
+          "Microsoft.JavaScript.Hermes": "[0.0.0-2604.21001-94aa5e1d, )",
           "Microsoft.SourceLink.GitHub": "[1.1.1, )",
           "Microsoft.Web.WebView2": "[1.0.2903.40, )",
           "Microsoft.WindowsAppSDK": "[1.7.250401001, )",
@@ -108,7 +108,7 @@
       "react.windows.desktop.dll": {
         "type": "Project",
         "dependencies": {
-          "Microsoft.JavaScript.Hermes": "[0.0.0-2511.7001-d7ca19b3, )",
+          "Microsoft.JavaScript.Hermes": "[0.0.0-2604.21001-94aa5e1d, )",
           "Microsoft.SourceLink.GitHub": "[1.1.1, )",
           "React.Windows.Desktop": "[1.0.0, )",
           "ReactNative.V8Jsi.Windows": "[0.71.8, )",
diff --git a/vnext/Desktop.DLL/packages.experimentalwinui3.lock.json b/vnext/Desktop.DLL/packages.experimentalwinui3.lock.json
index 52de4768df6..ee52df31968 100644
--- a/vnext/Desktop.DLL/packages.experimentalwinui3.lock.json
+++ b/vnext/Desktop.DLL/packages.experimentalwinui3.lock.json
@@ -10,9 +10,9 @@
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       "Microsoft.JavaScript.Hermes": {
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-        "requested": "[0.0.0-2511.7001-d7ca19b3, )",
-        "resolved": "0.0.0-2511.7001-d7ca19b3",
-        "contentHash": "/EGy/gbTWpFZPZ4Z81QxbGQxpZhqiOE3qrnSokZRgXAyHivl15s7zZkRLOy9daDmVyEfanq7YBCOMi0ha58uQA=="
+        "requested": "[0.0.0-2604.21001-94aa5e1d, )",
+        "resolved": "0.0.0-2604.21001-94aa5e1d",
+        "contentHash": "8eHA3O043jIeK7E1gJbzgsdujaDTIBwLSl6pZj7CdQl+ryFqaW88XVU9ogWJPxk5lR2T4cU/OlEJfZynqoyYew=="
       },
       "Microsoft.SourceLink.GitHub": {
         "type": "Direct",
@@ -87,7 +87,7 @@
           "Common": "[1.0.0, )",
           "Folly": "[1.0.0, )",
           "FollyWin32": "[1.0.0, )",
-          "Microsoft.JavaScript.Hermes": "[0.0.0-2511.7001-d7ca19b3, )",
+          "Microsoft.JavaScript.Hermes": "[0.0.0-2604.21001-94aa5e1d, )",
           "Microsoft.SourceLink.GitHub": "[1.1.1, )",
           "Microsoft.Web.WebView2": "[1.0.2903.40, )",
           "Microsoft.WindowsAppSDK": "[1.7.250127003-experimental3, )",
diff --git a/vnext/Desktop.DLL/packages.lock.json b/vnext/Desktop.DLL/packages.lock.json
index ae0839ee8e2..22337c99ffb 100644
--- a/vnext/Desktop.DLL/packages.lock.json
+++ b/vnext/Desktop.DLL/packages.lock.json
@@ -10,9 +10,9 @@
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       "Microsoft.JavaScript.Hermes": {
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-        "requested": "[0.0.0-2511.7001-d7ca19b3, )",
-        "resolved": "0.0.0-2511.7001-d7ca19b3",
-        "contentHash": "/EGy/gbTWpFZPZ4Z81QxbGQxpZhqiOE3qrnSokZRgXAyHivl15s7zZkRLOy9daDmVyEfanq7YBCOMi0ha58uQA=="
+        "requested": "[0.0.0-2604.21001-94aa5e1d, )",
+        "resolved": "0.0.0-2604.21001-94aa5e1d",
+        "contentHash": "8eHA3O043jIeK7E1gJbzgsdujaDTIBwLSl6pZj7CdQl+ryFqaW88XVU9ogWJPxk5lR2T4cU/OlEJfZynqoyYew=="
       },
       "Microsoft.SourceLink.GitHub": {
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@@ -87,7 +87,7 @@
           "Common": "[1.0.0, )",
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           "FollyWin32": "[1.0.0, )",
-          "Microsoft.JavaScript.Hermes": "[0.0.0-2511.7001-d7ca19b3, )",
+          "Microsoft.JavaScript.Hermes": "[0.0.0-2604.21001-94aa5e1d, )",
           "Microsoft.SourceLink.GitHub": "[1.1.1, )",
           "Microsoft.Web.WebView2": "[1.0.2903.40, )",
           "Microsoft.WindowsAppSDK": "[1.7.250401001, )",
diff --git a/vnext/Desktop.IntegrationTests/packages.experimentalwinui3.lock.json b/vnext/Desktop.IntegrationTests/packages.experimentalwinui3.lock.json
index ffcae69041a..23c69f70465 100644
--- a/vnext/Desktop.IntegrationTests/packages.experimentalwinui3.lock.json
+++ b/vnext/Desktop.IntegrationTests/packages.experimentalwinui3.lock.json
@@ -33,8 +33,8 @@
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       "Microsoft.JavaScript.Hermes": {
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-        "resolved": "0.0.0-2511.7001-d7ca19b3",
-        "contentHash": "/EGy/gbTWpFZPZ4Z81QxbGQxpZhqiOE3qrnSokZRgXAyHivl15s7zZkRLOy9daDmVyEfanq7YBCOMi0ha58uQA=="
+        "resolved": "0.0.0-2604.21001-94aa5e1d",
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@@ -92,7 +92,7 @@
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           "FollyWin32": "[1.0.0, )",
-          "Microsoft.JavaScript.Hermes": "[0.0.0-2511.7001-d7ca19b3, )",
+          "Microsoft.JavaScript.Hermes": "[0.0.0-2604.21001-94aa5e1d, )",
           "Microsoft.SourceLink.GitHub": "[1.1.1, )",
           "Microsoft.Web.WebView2": "[1.0.2903.40, )",
           "Microsoft.WindowsAppSDK": "[1.7.250127003-experimental3, )",
@@ -104,7 +104,7 @@
       "react.windows.desktop.dll": {
         "type": "Project",
         "dependencies": {
-          "Microsoft.JavaScript.Hermes": "[0.0.0-2511.7001-d7ca19b3, )",
+          "Microsoft.JavaScript.Hermes": "[0.0.0-2604.21001-94aa5e1d, )",
           "Microsoft.SourceLink.GitHub": "[1.1.1, )",
           "React.Windows.Desktop": "[1.0.0, )",
           "ReactNative.V8Jsi.Windows": "[0.71.8, )",
diff --git a/vnext/Desktop.IntegrationTests/packages.lock.json b/vnext/Desktop.IntegrationTests/packages.lock.json
index 51f60fe0d06..2c4e403e449 100644
--- a/vnext/Desktop.IntegrationTests/packages.lock.json
+++ b/vnext/Desktop.IntegrationTests/packages.lock.json
@@ -33,8 +33,8 @@
       },
       "Microsoft.JavaScript.Hermes": {
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-        "resolved": "0.0.0-2511.7001-d7ca19b3",
-        "contentHash": "/EGy/gbTWpFZPZ4Z81QxbGQxpZhqiOE3qrnSokZRgXAyHivl15s7zZkRLOy9daDmVyEfanq7YBCOMi0ha58uQA=="
+        "resolved": "0.0.0-2604.21001-94aa5e1d",
+        "contentHash": "8eHA3O043jIeK7E1gJbzgsdujaDTIBwLSl6pZj7CdQl+ryFqaW88XVU9ogWJPxk5lR2T4cU/OlEJfZynqoyYew=="
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       "Microsoft.SourceLink.Common": {
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@@ -92,7 +92,7 @@
           "Common": "[1.0.0, )",
           "Folly": "[1.0.0, )",
           "FollyWin32": "[1.0.0, )",
-          "Microsoft.JavaScript.Hermes": "[0.0.0-2511.7001-d7ca19b3, )",
+          "Microsoft.JavaScript.Hermes": "[0.0.0-2604.21001-94aa5e1d, )",
           "Microsoft.SourceLink.GitHub": "[1.1.1, )",
           "Microsoft.Web.WebView2": "[1.0.2903.40, )",
           "Microsoft.WindowsAppSDK": "[1.7.250401001, )",
@@ -104,7 +104,7 @@
       "react.windows.desktop.dll": {
         "type": "Project",
         "dependencies": {
-          "Microsoft.JavaScript.Hermes": "[0.0.0-2511.7001-d7ca19b3, )",
+          "Microsoft.JavaScript.Hermes": "[0.0.0-2604.21001-94aa5e1d, )",
           "Microsoft.SourceLink.GitHub": "[1.1.1, )",
           "React.Windows.Desktop": "[1.0.0, )",
           "ReactNative.V8Jsi.Windows": "[0.71.8, )",
diff --git a/vnext/Desktop.UnitTests/packages.experimentalwinui3.lock.json b/vnext/Desktop.UnitTests/packages.experimentalwinui3.lock.json
index 3a07043129d..bb375183293 100644
--- a/vnext/Desktop.UnitTests/packages.experimentalwinui3.lock.json
+++ b/vnext/Desktop.UnitTests/packages.experimentalwinui3.lock.json
@@ -21,8 +21,8 @@
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       "Microsoft.JavaScript.Hermes": {
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-        "resolved": "0.0.0-2511.7001-d7ca19b3",
-        "contentHash": "/EGy/gbTWpFZPZ4Z81QxbGQxpZhqiOE3qrnSokZRgXAyHivl15s7zZkRLOy9daDmVyEfanq7YBCOMi0ha58uQA=="
+        "resolved": "0.0.0-2604.21001-94aa5e1d",
+        "contentHash": "8eHA3O043jIeK7E1gJbzgsdujaDTIBwLSl6pZj7CdQl+ryFqaW88XVU9ogWJPxk5lR2T4cU/OlEJfZynqoyYew=="
       },
       "Microsoft.SourceLink.Common": {
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@@ -90,7 +90,7 @@
           "Common": "[1.0.0, )",
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           "FollyWin32": "[1.0.0, )",
-          "Microsoft.JavaScript.Hermes": "[0.0.0-2511.7001-d7ca19b3, )",
+          "Microsoft.JavaScript.Hermes": "[0.0.0-2604.21001-94aa5e1d, )",
           "Microsoft.SourceLink.GitHub": "[1.1.1, )",
           "Microsoft.Web.WebView2": "[1.0.2903.40, )",
           "Microsoft.WindowsAppSDK": "[1.7.250127003-experimental3, )",
diff --git a/vnext/Desktop.UnitTests/packages.lock.json b/vnext/Desktop.UnitTests/packages.lock.json
index 27d963ee61c..0ec952e6de1 100644
--- a/vnext/Desktop.UnitTests/packages.lock.json
+++ b/vnext/Desktop.UnitTests/packages.lock.json
@@ -21,8 +21,8 @@
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       "Microsoft.JavaScript.Hermes": {
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-        "resolved": "0.0.0-2511.7001-d7ca19b3",
-        "contentHash": "/EGy/gbTWpFZPZ4Z81QxbGQxpZhqiOE3qrnSokZRgXAyHivl15s7zZkRLOy9daDmVyEfanq7YBCOMi0ha58uQA=="
+        "resolved": "0.0.0-2604.21001-94aa5e1d",
+        "contentHash": "8eHA3O043jIeK7E1gJbzgsdujaDTIBwLSl6pZj7CdQl+ryFqaW88XVU9ogWJPxk5lR2T4cU/OlEJfZynqoyYew=="
       },
       "Microsoft.SourceLink.Common": {
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@@ -90,7 +90,7 @@
           "Common": "[1.0.0, )",
           "Folly": "[1.0.0, )",
           "FollyWin32": "[1.0.0, )",
-          "Microsoft.JavaScript.Hermes": "[0.0.0-2511.7001-d7ca19b3, )",
+          "Microsoft.JavaScript.Hermes": "[0.0.0-2604.21001-94aa5e1d, )",
           "Microsoft.SourceLink.GitHub": "[1.1.1, )",
           "Microsoft.Web.WebView2": "[1.0.2903.40, )",
           "Microsoft.WindowsAppSDK": "[1.7.250401001, )",
diff --git a/vnext/Desktop/packages.experimentalwinui3.lock.json b/vnext/Desktop/packages.experimentalwinui3.lock.json
index 71590f90d8c..a15fd71bf0d 100644
--- a/vnext/Desktop/packages.experimentalwinui3.lock.json
+++ b/vnext/Desktop/packages.experimentalwinui3.lock.json
@@ -10,9 +10,9 @@
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       "Microsoft.JavaScript.Hermes": {
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-        "requested": "[0.0.0-2511.7001-d7ca19b3, )",
-        "resolved": "0.0.0-2511.7001-d7ca19b3",
-        "contentHash": "/EGy/gbTWpFZPZ4Z81QxbGQxpZhqiOE3qrnSokZRgXAyHivl15s7zZkRLOy9daDmVyEfanq7YBCOMi0ha58uQA=="
+        "requested": "[0.0.0-2604.21001-94aa5e1d, )",
+        "resolved": "0.0.0-2604.21001-94aa5e1d",
+        "contentHash": "8eHA3O043jIeK7E1gJbzgsdujaDTIBwLSl6pZj7CdQl+ryFqaW88XVU9ogWJPxk5lR2T4cU/OlEJfZynqoyYew=="
       },
       "Microsoft.SourceLink.GitHub": {
         "type": "Direct",
diff --git a/vnext/Desktop/packages.lock.json b/vnext/Desktop/packages.lock.json
index ee1428eed58..f80beb3b350 100644
--- a/vnext/Desktop/packages.lock.json
+++ b/vnext/Desktop/packages.lock.json
@@ -10,9 +10,9 @@
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       "Microsoft.JavaScript.Hermes": {
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-        "requested": "[0.0.0-2511.7001-d7ca19b3, )",
-        "resolved": "0.0.0-2511.7001-d7ca19b3",
-        "contentHash": "/EGy/gbTWpFZPZ4Z81QxbGQxpZhqiOE3qrnSokZRgXAyHivl15s7zZkRLOy9daDmVyEfanq7YBCOMi0ha58uQA=="
+        "requested": "[0.0.0-2604.21001-94aa5e1d, )",
+        "resolved": "0.0.0-2604.21001-94aa5e1d",
+        "contentHash": "8eHA3O043jIeK7E1gJbzgsdujaDTIBwLSl6pZj7CdQl+ryFqaW88XVU9ogWJPxk5lR2T4cU/OlEJfZynqoyYew=="
       },
       "Microsoft.SourceLink.GitHub": {
         "type": "Direct",
diff --git a/vnext/Microsoft.ReactNative.CsWinRT/packages.experimentalwinui3.lock.json b/vnext/Microsoft.ReactNative.CsWinRT/packages.experimentalwinui3.lock.json
index 178eac902cc..ab1085c357c 100644
--- a/vnext/Microsoft.ReactNative.CsWinRT/packages.experimentalwinui3.lock.json
+++ b/vnext/Microsoft.ReactNative.CsWinRT/packages.experimentalwinui3.lock.json
@@ -30,8 +30,8 @@
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       "Microsoft.JavaScript.Hermes": {
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-        "contentHash": "/EGy/gbTWpFZPZ4Z81QxbGQxpZhqiOE3qrnSokZRgXAyHivl15s7zZkRLOy9daDmVyEfanq7YBCOMi0ha58uQA=="
+        "resolved": "0.0.0-2604.21001-94aa5e1d",
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       },
       "Microsoft.SourceLink.Common": {
         "type": "Transitive",
@@ -78,7 +78,7 @@
         "dependencies": {
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           "Folly": "[1.0.0, )",
-          "Microsoft.JavaScript.Hermes": "[0.0.0-2511.7001-d7ca19b3, )",
+          "Microsoft.JavaScript.Hermes": "[0.0.0-2604.21001-94aa5e1d, )",
           "Microsoft.SourceLink.GitHub": "[1.1.1, )",
           "Microsoft.WindowsAppSDK": "[1.7.250127003-experimental3, )",
           "ReactCommon": "[1.0.0, )",
diff --git a/vnext/Microsoft.ReactNative.CsWinRT/packages.lock.json b/vnext/Microsoft.ReactNative.CsWinRT/packages.lock.json
index e858fdfbf8c..57b30624503 100644
--- a/vnext/Microsoft.ReactNative.CsWinRT/packages.lock.json
+++ b/vnext/Microsoft.ReactNative.CsWinRT/packages.lock.json
@@ -30,8 +30,8 @@
       },
       "Microsoft.JavaScript.Hermes": {
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-        "contentHash": "/EGy/gbTWpFZPZ4Z81QxbGQxpZhqiOE3qrnSokZRgXAyHivl15s7zZkRLOy9daDmVyEfanq7YBCOMi0ha58uQA=="
+        "resolved": "0.0.0-2604.21001-94aa5e1d",
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       },
       "Microsoft.SourceLink.Common": {
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@@ -78,7 +78,7 @@
         "dependencies": {
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           "Folly": "[1.0.0, )",
-          "Microsoft.JavaScript.Hermes": "[0.0.0-2511.7001-d7ca19b3, )",
+          "Microsoft.JavaScript.Hermes": "[0.0.0-2604.21001-94aa5e1d, )",
           "Microsoft.SourceLink.GitHub": "[1.1.1, )",
           "Microsoft.WindowsAppSDK": "[1.7.250401001, )",
           "ReactCommon": "[1.0.0, )",
diff --git a/vnext/Microsoft.ReactNative.IntegrationTests/packages.experimentalwinui3.lock.json b/vnext/Microsoft.ReactNative.IntegrationTests/packages.experimentalwinui3.lock.json
index 9e4f116c933..2efb827f449 100644
--- a/vnext/Microsoft.ReactNative.IntegrationTests/packages.experimentalwinui3.lock.json
+++ b/vnext/Microsoft.ReactNative.IntegrationTests/packages.experimentalwinui3.lock.json
@@ -33,8 +33,8 @@
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       "Microsoft.JavaScript.Hermes": {
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-        "contentHash": "/EGy/gbTWpFZPZ4Z81QxbGQxpZhqiOE3qrnSokZRgXAyHivl15s7zZkRLOy9daDmVyEfanq7YBCOMi0ha58uQA=="
+        "resolved": "0.0.0-2604.21001-94aa5e1d",
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@@ -84,7 +84,7 @@
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-          "Microsoft.JavaScript.Hermes": "[0.0.0-2511.7001-d7ca19b3, )",
+          "Microsoft.JavaScript.Hermes": "[0.0.0-2604.21001-94aa5e1d, )",
           "Microsoft.SourceLink.GitHub": "[1.1.1, )",
           "Microsoft.UI.Xaml": "[2.8.0, )",
           "ReactCommon": "[1.0.0, )",
diff --git a/vnext/Microsoft.ReactNative.IntegrationTests/packages.lock.json b/vnext/Microsoft.ReactNative.IntegrationTests/packages.lock.json
index 9e4f116c933..2efb827f449 100644
--- a/vnext/Microsoft.ReactNative.IntegrationTests/packages.lock.json
+++ b/vnext/Microsoft.ReactNative.IntegrationTests/packages.lock.json
@@ -33,8 +33,8 @@
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+        "resolved": "0.0.0-2604.21001-94aa5e1d",
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       "Microsoft.SourceLink.Common": {
         "type": "Transitive",
@@ -84,7 +84,7 @@
         "dependencies": {
           "Common": "[1.0.0, )",
           "Folly": "[1.0.0, )",
-          "Microsoft.JavaScript.Hermes": "[0.0.0-2511.7001-d7ca19b3, )",
+          "Microsoft.JavaScript.Hermes": "[0.0.0-2604.21001-94aa5e1d, )",
           "Microsoft.SourceLink.GitHub": "[1.1.1, )",
           "Microsoft.UI.Xaml": "[2.8.0, )",
           "ReactCommon": "[1.0.0, )",
diff --git a/vnext/Microsoft.ReactNative.IntegrationTests/packages.newarch.experimentalwinui3.lock.json b/vnext/Microsoft.ReactNative.IntegrationTests/packages.newarch.experimentalwinui3.lock.json
index 9cdf19b0fd4..487366256ab 100644
--- a/vnext/Microsoft.ReactNative.IntegrationTests/packages.newarch.experimentalwinui3.lock.json
+++ b/vnext/Microsoft.ReactNative.IntegrationTests/packages.newarch.experimentalwinui3.lock.json
@@ -43,8 +43,8 @@
       },
       "Microsoft.JavaScript.Hermes": {
         "type": "Transitive",
-        "resolved": "0.0.0-2511.7001-d7ca19b3",
-        "contentHash": "/EGy/gbTWpFZPZ4Z81QxbGQxpZhqiOE3qrnSokZRgXAyHivl15s7zZkRLOy9daDmVyEfanq7YBCOMi0ha58uQA=="
+        "resolved": "0.0.0-2604.21001-94aa5e1d",
+        "contentHash": "8eHA3O043jIeK7E1gJbzgsdujaDTIBwLSl6pZj7CdQl+ryFqaW88XVU9ogWJPxk5lR2T4cU/OlEJfZynqoyYew=="
       },
       "Microsoft.SourceLink.Common": {
         "type": "Transitive",
@@ -91,7 +91,7 @@
         "dependencies": {
           "Common": "[1.0.0, )",
           "Folly": "[1.0.0, )",
-          "Microsoft.JavaScript.Hermes": "[0.0.0-2511.7001-d7ca19b3, )",
+          "Microsoft.JavaScript.Hermes": "[0.0.0-2604.21001-94aa5e1d, )",
           "Microsoft.SourceLink.GitHub": "[1.1.1, )",
           "Microsoft.WindowsAppSDK": "[1.7.250127003-experimental3, )",
           "ReactCommon": "[1.0.0, )",
diff --git a/vnext/Microsoft.ReactNative.IntegrationTests/packages.newarch.lock.json b/vnext/Microsoft.ReactNative.IntegrationTests/packages.newarch.lock.json
index 18148cd2797..edbc75f8e04 100644
--- a/vnext/Microsoft.ReactNative.IntegrationTests/packages.newarch.lock.json
+++ b/vnext/Microsoft.ReactNative.IntegrationTests/packages.newarch.lock.json
@@ -43,8 +43,8 @@
       },
       "Microsoft.JavaScript.Hermes": {
         "type": "Transitive",
-        "resolved": "0.0.0-2511.7001-d7ca19b3",
-        "contentHash": "/EGy/gbTWpFZPZ4Z81QxbGQxpZhqiOE3qrnSokZRgXAyHivl15s7zZkRLOy9daDmVyEfanq7YBCOMi0ha58uQA=="
+        "resolved": "0.0.0-2604.21001-94aa5e1d",
+        "contentHash": "8eHA3O043jIeK7E1gJbzgsdujaDTIBwLSl6pZj7CdQl+ryFqaW88XVU9ogWJPxk5lR2T4cU/OlEJfZynqoyYew=="
       },
       "Microsoft.SourceLink.Common": {
         "type": "Transitive",
@@ -91,7 +91,7 @@
         "dependencies": {
           "Common": "[1.0.0, )",
           "Folly": "[1.0.0, )",
-          "Microsoft.JavaScript.Hermes": "[0.0.0-2511.7001-d7ca19b3, )",
+          "Microsoft.JavaScript.Hermes": "[0.0.0-2604.21001-94aa5e1d, )",
           "Microsoft.SourceLink.GitHub": "[1.1.1, )",
           "Microsoft.WindowsAppSDK": "[1.7.250401001, )",
           "ReactCommon": "[1.0.0, )",
diff --git a/vnext/Microsoft.ReactNative.Managed.IntegrationTests/packages.lock.json b/vnext/Microsoft.ReactNative.Managed.IntegrationTests/packages.lock.json
index 1ce21b18be7..967eacaf2a9 100644
--- a/vnext/Microsoft.ReactNative.Managed.IntegrationTests/packages.lock.json
+++ b/vnext/Microsoft.ReactNative.Managed.IntegrationTests/packages.lock.json
@@ -56,8 +56,8 @@
       },
       "Microsoft.JavaScript.Hermes": {
         "type": "Transitive",
-        "resolved": "0.0.0-2511.7001-d7ca19b3",
-        "contentHash": "/EGy/gbTWpFZPZ4Z81QxbGQxpZhqiOE3qrnSokZRgXAyHivl15s7zZkRLOy9daDmVyEfanq7YBCOMi0ha58uQA=="
+        "resolved": "0.0.0-2604.21001-94aa5e1d",
+        "contentHash": "8eHA3O043jIeK7E1gJbzgsdujaDTIBwLSl6pZj7CdQl+ryFqaW88XVU9ogWJPxk5lR2T4cU/OlEJfZynqoyYew=="
       },
       "Microsoft.Net.Native.Compiler": {
         "type": "Transitive",
@@ -332,7 +332,7 @@
         "dependencies": {
           "Common": "[1.0.0, )",
           "Folly": "[1.0.0, )",
-          "Microsoft.JavaScript.Hermes": "[0.0.0-2511.7001-d7ca19b3, )",
+          "Microsoft.JavaScript.Hermes": "[0.0.0-2604.21001-94aa5e1d, )",
           "Microsoft.SourceLink.GitHub": "[1.1.1, )",
           "Microsoft.UI.Xaml": "[2.8.0, )",
           "ReactCommon": "[1.0.0, )",
diff --git a/vnext/Microsoft.ReactNative.Managed.UnitTests/packages.lock.json b/vnext/Microsoft.ReactNative.Managed.UnitTests/packages.lock.json
index 1ce21b18be7..967eacaf2a9 100644
--- a/vnext/Microsoft.ReactNative.Managed.UnitTests/packages.lock.json
+++ b/vnext/Microsoft.ReactNative.Managed.UnitTests/packages.lock.json
@@ -56,8 +56,8 @@
       },
       "Microsoft.JavaScript.Hermes": {
         "type": "Transitive",
-        "resolved": "0.0.0-2511.7001-d7ca19b3",
-        "contentHash": "/EGy/gbTWpFZPZ4Z81QxbGQxpZhqiOE3qrnSokZRgXAyHivl15s7zZkRLOy9daDmVyEfanq7YBCOMi0ha58uQA=="
+        "resolved": "0.0.0-2604.21001-94aa5e1d",
+        "contentHash": "8eHA3O043jIeK7E1gJbzgsdujaDTIBwLSl6pZj7CdQl+ryFqaW88XVU9ogWJPxk5lR2T4cU/OlEJfZynqoyYew=="
       },
       "Microsoft.Net.Native.Compiler": {
         "type": "Transitive",
@@ -332,7 +332,7 @@
         "dependencies": {
           "Common": "[1.0.0, )",
           "Folly": "[1.0.0, )",
-          "Microsoft.JavaScript.Hermes": "[0.0.0-2511.7001-d7ca19b3, )",
+          "Microsoft.JavaScript.Hermes": "[0.0.0-2604.21001-94aa5e1d, )",
           "Microsoft.SourceLink.GitHub": "[1.1.1, )",
           "Microsoft.UI.Xaml": "[2.8.0, )",
           "ReactCommon": "[1.0.0, )",
diff --git a/vnext/Microsoft.ReactNative.Managed/packages.lock.json b/vnext/Microsoft.ReactNative.Managed/packages.lock.json
index 81ea701975f..965b497d0ab 100644
--- a/vnext/Microsoft.ReactNative.Managed/packages.lock.json
+++ b/vnext/Microsoft.ReactNative.Managed/packages.lock.json
@@ -36,8 +36,8 @@
       },
       "Microsoft.JavaScript.Hermes": {
         "type": "Transitive",
-        "resolved": "0.0.0-2511.7001-d7ca19b3",
-        "contentHash": "/EGy/gbTWpFZPZ4Z81QxbGQxpZhqiOE3qrnSokZRgXAyHivl15s7zZkRLOy9daDmVyEfanq7YBCOMi0ha58uQA=="
+        "resolved": "0.0.0-2604.21001-94aa5e1d",
+        "contentHash": "8eHA3O043jIeK7E1gJbzgsdujaDTIBwLSl6pZj7CdQl+ryFqaW88XVU9ogWJPxk5lR2T4cU/OlEJfZynqoyYew=="
       },
       "Microsoft.Net.Native.Compiler": {
         "type": "Transitive",
@@ -179,7 +179,7 @@
         "dependencies": {
           "Common": "[1.0.0, )",
           "Folly": "[1.0.0, )",
-          "Microsoft.JavaScript.Hermes": "[0.0.0-2511.7001-d7ca19b3, )",
+          "Microsoft.JavaScript.Hermes": "[0.0.0-2604.21001-94aa5e1d, )",
           "Microsoft.SourceLink.GitHub": "[1.1.1, )",
           "Microsoft.UI.Xaml": "[2.8.0, )",
           "ReactCommon": "[1.0.0, )",
diff --git a/vnext/Microsoft.ReactNative/packages.chakra.lock.json b/vnext/Microsoft.ReactNative/packages.chakra.lock.json
index 741a7cdadbf..11c57de990f 100644
--- a/vnext/Microsoft.ReactNative/packages.chakra.lock.json
+++ b/vnext/Microsoft.ReactNative/packages.chakra.lock.json
@@ -10,9 +10,9 @@
       },
       "Microsoft.JavaScript.Hermes": {
         "type": "Direct",
-        "requested": "[0.0.0-2511.7001-d7ca19b3, )",
-        "resolved": "0.0.0-2511.7001-d7ca19b3",
-        "contentHash": "/EGy/gbTWpFZPZ4Z81QxbGQxpZhqiOE3qrnSokZRgXAyHivl15s7zZkRLOy9daDmVyEfanq7YBCOMi0ha58uQA=="
+        "requested": "[0.0.0-2604.21001-94aa5e1d, )",
+        "resolved": "0.0.0-2604.21001-94aa5e1d",
+        "contentHash": "8eHA3O043jIeK7E1gJbzgsdujaDTIBwLSl6pZj7CdQl+ryFqaW88XVU9ogWJPxk5lR2T4cU/OlEJfZynqoyYew=="
       },
       "Microsoft.SourceLink.GitHub": {
         "type": "Direct",
diff --git a/vnext/Microsoft.ReactNative/packages.experimentalwinui3.lock.json b/vnext/Microsoft.ReactNative/packages.experimentalwinui3.lock.json
index 741a7cdadbf..11c57de990f 100644
--- a/vnext/Microsoft.ReactNative/packages.experimentalwinui3.lock.json
+++ b/vnext/Microsoft.ReactNative/packages.experimentalwinui3.lock.json
@@ -10,9 +10,9 @@
       },
       "Microsoft.JavaScript.Hermes": {
         "type": "Direct",
-        "requested": "[0.0.0-2511.7001-d7ca19b3, )",
-        "resolved": "0.0.0-2511.7001-d7ca19b3",
-        "contentHash": "/EGy/gbTWpFZPZ4Z81QxbGQxpZhqiOE3qrnSokZRgXAyHivl15s7zZkRLOy9daDmVyEfanq7YBCOMi0ha58uQA=="
+        "requested": "[0.0.0-2604.21001-94aa5e1d, )",
+        "resolved": "0.0.0-2604.21001-94aa5e1d",
+        "contentHash": "8eHA3O043jIeK7E1gJbzgsdujaDTIBwLSl6pZj7CdQl+ryFqaW88XVU9ogWJPxk5lR2T4cU/OlEJfZynqoyYew=="
       },
       "Microsoft.SourceLink.GitHub": {
         "type": "Direct",
diff --git a/vnext/Microsoft.ReactNative/packages.lock.json b/vnext/Microsoft.ReactNative/packages.lock.json
index 741a7cdadbf..11c57de990f 100644
--- a/vnext/Microsoft.ReactNative/packages.lock.json
+++ b/vnext/Microsoft.ReactNative/packages.lock.json
@@ -10,9 +10,9 @@
       },
       "Microsoft.JavaScript.Hermes": {
         "type": "Direct",
-        "requested": "[0.0.0-2511.7001-d7ca19b3, )",
-        "resolved": "0.0.0-2511.7001-d7ca19b3",
-        "contentHash": "/EGy/gbTWpFZPZ4Z81QxbGQxpZhqiOE3qrnSokZRgXAyHivl15s7zZkRLOy9daDmVyEfanq7YBCOMi0ha58uQA=="
+        "requested": "[0.0.0-2604.21001-94aa5e1d, )",
+        "resolved": "0.0.0-2604.21001-94aa5e1d",
+        "contentHash": "8eHA3O043jIeK7E1gJbzgsdujaDTIBwLSl6pZj7CdQl+ryFqaW88XVU9ogWJPxk5lR2T4cU/OlEJfZynqoyYew=="
       },
       "Microsoft.SourceLink.GitHub": {
         "type": "Direct",
diff --git a/vnext/Microsoft.ReactNative/packages.newarch.experimentalwinui3.lock.json b/vnext/Microsoft.ReactNative/packages.newarch.experimentalwinui3.lock.json
index 6ee3cf9ea85..a4e49e79b1e 100644
--- a/vnext/Microsoft.ReactNative/packages.newarch.experimentalwinui3.lock.json
+++ b/vnext/Microsoft.ReactNative/packages.newarch.experimentalwinui3.lock.json
@@ -10,9 +10,9 @@
       },
       "Microsoft.JavaScript.Hermes": {
         "type": "Direct",
-        "requested": "[0.0.0-2511.7001-d7ca19b3, )",
-        "resolved": "0.0.0-2511.7001-d7ca19b3",
-        "contentHash": "/EGy/gbTWpFZPZ4Z81QxbGQxpZhqiOE3qrnSokZRgXAyHivl15s7zZkRLOy9daDmVyEfanq7YBCOMi0ha58uQA=="
+        "requested": "[0.0.0-2604.21001-94aa5e1d, )",
+        "resolved": "0.0.0-2604.21001-94aa5e1d",
+        "contentHash": "8eHA3O043jIeK7E1gJbzgsdujaDTIBwLSl6pZj7CdQl+ryFqaW88XVU9ogWJPxk5lR2T4cU/OlEJfZynqoyYew=="
       },
       "Microsoft.SourceLink.GitHub": {
         "type": "Direct",
diff --git a/vnext/Microsoft.ReactNative/packages.newarch.lock.json b/vnext/Microsoft.ReactNative/packages.newarch.lock.json
index 5cae6eb0f35..e7a204c4a60 100644
--- a/vnext/Microsoft.ReactNative/packages.newarch.lock.json
+++ b/vnext/Microsoft.ReactNative/packages.newarch.lock.json
@@ -10,9 +10,9 @@
       },
       "Microsoft.JavaScript.Hermes": {
         "type": "Direct",
-        "requested": "[0.0.0-2511.7001-d7ca19b3, )",
-        "resolved": "0.0.0-2511.7001-d7ca19b3",
-        "contentHash": "/EGy/gbTWpFZPZ4Z81QxbGQxpZhqiOE3qrnSokZRgXAyHivl15s7zZkRLOy9daDmVyEfanq7YBCOMi0ha58uQA=="
+        "requested": "[0.0.0-2604.21001-94aa5e1d, )",
+        "resolved": "0.0.0-2604.21001-94aa5e1d",
+        "contentHash": "8eHA3O043jIeK7E1gJbzgsdujaDTIBwLSl6pZj7CdQl+ryFqaW88XVU9ogWJPxk5lR2T4cU/OlEJfZynqoyYew=="
       },
       "Microsoft.SourceLink.GitHub": {
         "type": "Direct",
diff --git a/vnext/PropertySheets/JSEngine.props b/vnext/PropertySheets/JSEngine.props
index a7fe1f085fa..cc13727ac09 100644
--- a/vnext/PropertySheets/JSEngine.props
+++ b/vnext/PropertySheets/JSEngine.props
@@ -6,7 +6,7 @@
     <!-- Enabling this will (1) Include hermes glues in the Microsoft.ReactNative binaries AND (2) Make hermes the default engine -->
     <UseHermes Condition="'$(UseHermes)' == ''">true</UseHermes>
     <!-- This will be true if (1) the client want to use hermes by setting UseHermes to true OR (2) We are building for UWP where dynamic switching is enabled -->
-    <HermesVersion Condition="'$(HermesVersion)' == ''">0.0.0-2511.7001-d7ca19b3</HermesVersion>
+    <HermesVersion Condition="'$(HermesVersion)' == ''">0.0.0-2604.21001-94aa5e1d</HermesVersion>
     <HermesPackage Condition="'$(HermesPackage)' == '' And Exists('$(PkgMicrosoft_JavaScript_Hermes)')">$(PkgMicrosoft_JavaScript_Hermes)</HermesPackage>
     <HermesPackage Condition="'$(HermesPackage)' == ''">$(NuGetPackageRoot)\Microsoft.JavaScript.Hermes\$(HermesVersion)</HermesPackage>
     <EnableHermesInspectorInReleaseFlavor Condition="'$(EnableHermesInspectorInReleaseFlavor)' == ''">false</EnableHermesInspectorInReleaseFlavor>
diff --git a/vnext/ReactCommon.UnitTests/packages.experimentalwinui3.lock.json b/vnext/ReactCommon.UnitTests/packages.experimentalwinui3.lock.json
index f5efdaeb880..4f5d6374165 100644
--- a/vnext/ReactCommon.UnitTests/packages.experimentalwinui3.lock.json
+++ b/vnext/ReactCommon.UnitTests/packages.experimentalwinui3.lock.json
@@ -27,8 +27,8 @@
       },
       "Microsoft.JavaScript.Hermes": {
         "type": "Transitive",
-        "resolved": "0.0.0-2511.7001-d7ca19b3",
-        "contentHash": "/EGy/gbTWpFZPZ4Z81QxbGQxpZhqiOE3qrnSokZRgXAyHivl15s7zZkRLOy9daDmVyEfanq7YBCOMi0ha58uQA=="
+        "resolved": "0.0.0-2604.21001-94aa5e1d",
+        "contentHash": "8eHA3O043jIeK7E1gJbzgsdujaDTIBwLSl6pZj7CdQl+ryFqaW88XVU9ogWJPxk5lR2T4cU/OlEJfZynqoyYew=="
       },
       "Microsoft.SourceLink.Common": {
         "type": "Transitive",
@@ -91,7 +91,7 @@
           "Common": "[1.0.0, )",
           "Folly": "[1.0.0, )",
           "FollyWin32": "[1.0.0, )",
-          "Microsoft.JavaScript.Hermes": "[0.0.0-2511.7001-d7ca19b3, )",
+          "Microsoft.JavaScript.Hermes": "[0.0.0-2604.21001-94aa5e1d, )",
           "Microsoft.SourceLink.GitHub": "[1.1.1, )",
           "Microsoft.Web.WebView2": "[1.0.2903.40, )",
           "Microsoft.WindowsAppSDK": "[1.7.250127003-experimental3, )",
diff --git a/vnext/ReactCommon.UnitTests/packages.lock.json b/vnext/ReactCommon.UnitTests/packages.lock.json
index 552f0e43b38..8b11c1eeee1 100644
--- a/vnext/ReactCommon.UnitTests/packages.lock.json
+++ b/vnext/ReactCommon.UnitTests/packages.lock.json
@@ -27,8 +27,8 @@
       },
       "Microsoft.JavaScript.Hermes": {
         "type": "Transitive",
-        "resolved": "0.0.0-2511.7001-d7ca19b3",
-        "contentHash": "/EGy/gbTWpFZPZ4Z81QxbGQxpZhqiOE3qrnSokZRgXAyHivl15s7zZkRLOy9daDmVyEfanq7YBCOMi0ha58uQA=="
+        "resolved": "0.0.0-2604.21001-94aa5e1d",
+        "contentHash": "8eHA3O043jIeK7E1gJbzgsdujaDTIBwLSl6pZj7CdQl+ryFqaW88XVU9ogWJPxk5lR2T4cU/OlEJfZynqoyYew=="
       },
       "Microsoft.SourceLink.Common": {
         "type": "Transitive",
@@ -91,7 +91,7 @@
           "Common": "[1.0.0, )",
           "Folly": "[1.0.0, )",
           "FollyWin32": "[1.0.0, )",
-          "Microsoft.JavaScript.Hermes": "[0.0.0-2511.7001-d7ca19b3, )",
+          "Microsoft.JavaScript.Hermes": "[0.0.0-2604.21001-94aa5e1d, )",
           "Microsoft.SourceLink.GitHub": "[1.1.1, )",
           "Microsoft.Web.WebView2": "[1.0.2903.40, )",
           "Microsoft.WindowsAppSDK": "[1.7.250401001, )",