diff --git a/change/@react-native-windows-automation-channel-35d720c3-5f5e-4f64-977e-cea33a72a93b.json b/change/@react-native-windows-automation-channel-35d720c3-5f5e-4f64-977e-cea33a72a93b.json
new file mode 100644
index 00000000000..f691da93c38
--- /dev/null
+++ b/change/@react-native-windows-automation-channel-35d720c3-5f5e-4f64-977e-cea33a72a93b.json
@@ -0,0 +1,7 @@
+{
+  "type": "prerelease",
+  "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-0355f552-1b00-42d8-a192-7b1c8e91eb2b.json b/change/react-native-windows-0355f552-1b00-42d8-a192-7b1c8e91eb2b.json
new file mode 100644
index 00000000000..3a6fc58cbd0
--- /dev/null
+++ b/change/react-native-windows-0355f552-1b00-42d8-a192-7b1c8e91eb2b.json
@@ -0,0 +1,7 @@
+{
+  "type": "prerelease",
+  "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.lock.json b/packages/@react-native-windows/automation-channel/windows/AutomationChannel/packages.lock.json
index 0edb5b41fcd..ee46bcd28bf 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
@@ -44,8 +44,8 @@
       },
       "Microsoft.JavaScript.Hermes": {
         "type": "Transitive",
-        "resolved": "0.0.0-2512.22001-bc3d0ed7",
-        "contentHash": "aMuCKrIwkCAnT56+oKqmxgfIaAHlKRVt8IiG/jtMbG01QH1mLPwL7wP89jRMsYSJzikW96trqgpUllZZa3O+Qw=="
+        "resolved": "0.0.0-2604.21001-94aa5e1d",
+        "contentHash": "8eHA3O043jIeK7E1gJbzgsdujaDTIBwLSl6pZj7CdQl+ryFqaW88XVU9ogWJPxk5lR2T4cU/OlEJfZynqoyYew=="
       },
       "Microsoft.SourceLink.Common": {
         "type": "Transitive",
@@ -176,7 +176,7 @@
         "dependencies": {
           "Common": "[1.0.0, )",
           "Folly": "[1.0.0, )",
-          "Microsoft.JavaScript.Hermes": "[0.0.0-2512.22001-bc3d0ed7, )",
+          "Microsoft.JavaScript.Hermes": "[0.0.0-2604.21001-94aa5e1d, )",
           "Microsoft.SourceLink.GitHub": "[1.1.1, )",
           "Microsoft.WindowsAppSDK": "[1.8.260209005, )",
           "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 228547b745a..398979434bc 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": "0.0.0-2512.22001-bc3d0ed7",
-        "contentHash": "aMuCKrIwkCAnT56+oKqmxgfIaAHlKRVt8IiG/jtMbG01QH1mLPwL7wP89jRMsYSJzikW96trqgpUllZZa3O+Qw=="
+        "resolved": "0.0.0-2604.21001-94aa5e1d",
+        "contentHash": "8eHA3O043jIeK7E1gJbzgsdujaDTIBwLSl6pZj7CdQl+ryFqaW88XVU9ogWJPxk5lR2T4cU/OlEJfZynqoyYew=="
       },
       "Microsoft.SourceLink.Common": {
         "type": "Transitive",
@@ -176,7 +176,7 @@
         "dependencies": {
           "Common": "[1.0.0, )",
           "Folly": "[1.0.0, )",
-          "Microsoft.JavaScript.Hermes": "[0.0.0-2512.22001-bc3d0ed7, )",
+          "Microsoft.JavaScript.Hermes": "[0.0.0-2604.21001-94aa5e1d, )",
           "Microsoft.SourceLink.GitHub": "[1.1.1, )",
           "Microsoft.WindowsAppSDK": "[1.8.260209005, )",
           "ReactCommon": "[1.0.0, )",
@@ -194,7 +194,7 @@
         "type": "Project",
         "dependencies": {
           "AutomationChannel": "[1.0.0, )",
-          "Microsoft.JavaScript.Hermes": "[0.0.0-2512.22001-bc3d0ed7, )",
+          "Microsoft.JavaScript.Hermes": "[0.0.0-2604.21001-94aa5e1d, )",
           "Microsoft.ReactNative": "[1.0.0, )",
           "Microsoft.VCRTForwarders.140": "[1.0.2-rc, )",
           "Microsoft.WindowsAppSDK": "[1.8.260209005, )",
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 0297041f37a..09f7ff83439 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": "[0.0.0-2512.22001-bc3d0ed7, )",
-        "resolved": "0.0.0-2512.22001-bc3d0ed7",
-        "contentHash": "aMuCKrIwkCAnT56+oKqmxgfIaAHlKRVt8IiG/jtMbG01QH1mLPwL7wP89jRMsYSJzikW96trqgpUllZZa3O+Qw=="
+        "requested": "[0.0.0-2604.21001-94aa5e1d, )",
+        "resolved": "0.0.0-2604.21001-94aa5e1d",
+        "contentHash": "8eHA3O043jIeK7E1gJbzgsdujaDTIBwLSl6pZj7CdQl+ryFqaW88XVU9ogWJPxk5lR2T4cU/OlEJfZynqoyYew=="
       },
       "Microsoft.VCRTForwarders.140": {
         "type": "Direct",
@@ -186,7 +186,7 @@
         "dependencies": {
           "Common": "[1.0.0, )",
           "Folly": "[1.0.0, )",
-          "Microsoft.JavaScript.Hermes": "[0.0.0-2512.22001-bc3d0ed7, )",
+          "Microsoft.JavaScript.Hermes": "[0.0.0-2604.21001-94aa5e1d, )",
           "Microsoft.SourceLink.GitHub": "[1.1.1, )",
           "Microsoft.WindowsAppSDK": "[1.8.260209005, )",
           "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 62734e72ee9..5e91409a555 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": "0.0.0-2512.22001-bc3d0ed7",
-        "contentHash": "aMuCKrIwkCAnT56+oKqmxgfIaAHlKRVt8IiG/jtMbG01QH1mLPwL7wP89jRMsYSJzikW96trqgpUllZZa3O+Qw=="
+        "resolved": "0.0.0-2604.21001-94aa5e1d",
+        "contentHash": "8eHA3O043jIeK7E1gJbzgsdujaDTIBwLSl6pZj7CdQl+ryFqaW88XVU9ogWJPxk5lR2T4cU/OlEJfZynqoyYew=="
       },
       "Microsoft.SourceLink.Common": {
         "type": "Transitive",
@@ -167,7 +167,7 @@
         "dependencies": {
           "Common": "[1.0.0, )",
           "Folly": "[1.0.0, )",
-          "Microsoft.JavaScript.Hermes": "[0.0.0-2512.22001-bc3d0ed7, )",
+          "Microsoft.JavaScript.Hermes": "[0.0.0-2604.21001-94aa5e1d, )",
           "Microsoft.SourceLink.GitHub": "[1.1.1, )",
           "Microsoft.WindowsAppSDK": "[2.0.0-experimental3, )",
           "ReactCommon": "[1.0.0, )",
@@ -177,7 +177,7 @@
       "playground-composition": {
         "type": "Project",
         "dependencies": {
-          "Microsoft.JavaScript.Hermes": "[0.0.0-2512.22001-bc3d0ed7, )",
+          "Microsoft.JavaScript.Hermes": "[0.0.0-2604.21001-94aa5e1d, )",
           "Microsoft.ReactNative": "[1.0.0, )",
           "Microsoft.VCRTForwarders.140": "[1.0.2-rc, )",
           "Microsoft.WindowsAppSDK": "[2.0.0-experimental3, )",
diff --git a/packages/playground/windows/playground-composition.Package/packages.lock.json b/packages/playground/windows/playground-composition.Package/packages.lock.json
index f27ab0cb868..87d3882b0ee 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": "0.0.0-2512.22001-bc3d0ed7",
-        "contentHash": "aMuCKrIwkCAnT56+oKqmxgfIaAHlKRVt8IiG/jtMbG01QH1mLPwL7wP89jRMsYSJzikW96trqgpUllZZa3O+Qw=="
+        "resolved": "0.0.0-2604.21001-94aa5e1d",
+        "contentHash": "8eHA3O043jIeK7E1gJbzgsdujaDTIBwLSl6pZj7CdQl+ryFqaW88XVU9ogWJPxk5lR2T4cU/OlEJfZynqoyYew=="
       },
       "Microsoft.SourceLink.Common": {
         "type": "Transitive",
@@ -167,7 +167,7 @@
         "dependencies": {
           "Common": "[1.0.0, )",
           "Folly": "[1.0.0, )",
-          "Microsoft.JavaScript.Hermes": "[0.0.0-2512.22001-bc3d0ed7, )",
+          "Microsoft.JavaScript.Hermes": "[0.0.0-2604.21001-94aa5e1d, )",
           "Microsoft.SourceLink.GitHub": "[1.1.1, )",
           "Microsoft.WindowsAppSDK": "[1.8.260209005, )",
           "ReactCommon": "[1.0.0, )",
@@ -177,7 +177,7 @@
       "playground-composition": {
         "type": "Project",
         "dependencies": {
-          "Microsoft.JavaScript.Hermes": "[0.0.0-2512.22001-bc3d0ed7, )",
+          "Microsoft.JavaScript.Hermes": "[0.0.0-2604.21001-94aa5e1d, )",
           "Microsoft.ReactNative": "[1.0.0, )",
           "Microsoft.VCRTForwarders.140": "[1.0.2-rc, )",
           "Microsoft.WindowsAppSDK": "[1.8.260209005, )",
diff --git a/packages/playground/windows/playground-composition/packages.experimentalwinui3.lock.json b/packages/playground/windows/playground-composition/packages.experimentalwinui3.lock.json
index 20d5138ab30..a1ff0c7a21f 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": "[0.0.0-2512.22001-bc3d0ed7, )",
-        "resolved": "0.0.0-2512.22001-bc3d0ed7",
-        "contentHash": "aMuCKrIwkCAnT56+oKqmxgfIaAHlKRVt8IiG/jtMbG01QH1mLPwL7wP89jRMsYSJzikW96trqgpUllZZa3O+Qw=="
+        "requested": "[0.0.0-2604.21001-94aa5e1d, )",
+        "resolved": "0.0.0-2604.21001-94aa5e1d",
+        "contentHash": "8eHA3O043jIeK7E1gJbzgsdujaDTIBwLSl6pZj7CdQl+ryFqaW88XVU9ogWJPxk5lR2T4cU/OlEJfZynqoyYew=="
       },
       "Microsoft.VCRTForwarders.140": {
         "type": "Direct",
@@ -177,7 +177,7 @@
         "dependencies": {
           "Common": "[1.0.0, )",
           "Folly": "[1.0.0, )",
-          "Microsoft.JavaScript.Hermes": "[0.0.0-2512.22001-bc3d0ed7, )",
+          "Microsoft.JavaScript.Hermes": "[0.0.0-2604.21001-94aa5e1d, )",
           "Microsoft.SourceLink.GitHub": "[1.1.1, )",
           "Microsoft.WindowsAppSDK": "[2.0.0-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 e44cc6c173e..ae88ced9433 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": "[0.0.0-2512.22001-bc3d0ed7, )",
-        "resolved": "0.0.0-2512.22001-bc3d0ed7",
-        "contentHash": "aMuCKrIwkCAnT56+oKqmxgfIaAHlKRVt8IiG/jtMbG01QH1mLPwL7wP89jRMsYSJzikW96trqgpUllZZa3O+Qw=="
+        "requested": "[0.0.0-2604.21001-94aa5e1d, )",
+        "resolved": "0.0.0-2604.21001-94aa5e1d",
+        "contentHash": "8eHA3O043jIeK7E1gJbzgsdujaDTIBwLSl6pZj7CdQl+ryFqaW88XVU9ogWJPxk5lR2T4cU/OlEJfZynqoyYew=="
       },
       "Microsoft.VCRTForwarders.140": {
         "type": "Direct",
@@ -177,7 +177,7 @@
         "dependencies": {
           "Common": "[1.0.0, )",
           "Folly": "[1.0.0, )",
-          "Microsoft.JavaScript.Hermes": "[0.0.0-2512.22001-bc3d0ed7, )",
+          "Microsoft.JavaScript.Hermes": "[0.0.0-2604.21001-94aa5e1d, )",
           "Microsoft.SourceLink.GitHub": "[1.1.1, )",
           "Microsoft.WindowsAppSDK": "[1.8.260209005, )",
           "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 a0d4e13e203..4fcb6ab45ef 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": "0.0.0-2512.22001-bc3d0ed7",
-        "contentHash": "aMuCKrIwkCAnT56+oKqmxgfIaAHlKRVt8IiG/jtMbG01QH1mLPwL7wP89jRMsYSJzikW96trqgpUllZZa3O+Qw=="
+        "resolved": "0.0.0-2604.21001-94aa5e1d",
+        "contentHash": "8eHA3O043jIeK7E1gJbzgsdujaDTIBwLSl6pZj7CdQl+ryFqaW88XVU9ogWJPxk5lR2T4cU/OlEJfZynqoyYew=="
       },
       "Microsoft.SourceLink.Common": {
         "type": "Transitive",
@@ -167,7 +167,7 @@
         "dependencies": {
           "Common": "[1.0.0, )",
           "Folly": "[1.0.0, )",
-          "Microsoft.JavaScript.Hermes": "[0.0.0-2512.22001-bc3d0ed7, )",
+          "Microsoft.JavaScript.Hermes": "[0.0.0-2604.21001-94aa5e1d, )",
           "Microsoft.SourceLink.GitHub": "[1.1.1, )",
           "Microsoft.WindowsAppSDK": "[1.8.260209005, )",
           "ReactCommon": "[1.0.0, )",
@@ -184,7 +184,7 @@
       "sampleappfabric": {
         "type": "Project",
         "dependencies": {
-          "Microsoft.JavaScript.Hermes": "[0.0.0-2512.22001-bc3d0ed7, )",
+          "Microsoft.JavaScript.Hermes": "[0.0.0-2604.21001-94aa5e1d, )",
           "Microsoft.ReactNative": "[1.0.0, )",
           "Microsoft.VCRTForwarders.140": "[1.0.2-rc, )",
           "Microsoft.WindowsAppSDK": "[1.8.260209005, )",
diff --git a/packages/sample-app-fabric/windows/SampleAppFabric/packages.lock.json b/packages/sample-app-fabric/windows/SampleAppFabric/packages.lock.json
index bcda93e59e9..c2062b862a4 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": "[0.0.0-2512.22001-bc3d0ed7, )",
-        "resolved": "0.0.0-2512.22001-bc3d0ed7",
-        "contentHash": "aMuCKrIwkCAnT56+oKqmxgfIaAHlKRVt8IiG/jtMbG01QH1mLPwL7wP89jRMsYSJzikW96trqgpUllZZa3O+Qw=="
+        "requested": "[0.0.0-2604.21001-94aa5e1d, )",
+        "resolved": "0.0.0-2604.21001-94aa5e1d",
+        "contentHash": "8eHA3O043jIeK7E1gJbzgsdujaDTIBwLSl6pZj7CdQl+ryFqaW88XVU9ogWJPxk5lR2T4cU/OlEJfZynqoyYew=="
       },
       "Microsoft.VCRTForwarders.140": {
         "type": "Direct",
@@ -177,7 +177,7 @@
         "dependencies": {
           "Common": "[1.0.0, )",
           "Folly": "[1.0.0, )",
-          "Microsoft.JavaScript.Hermes": "[0.0.0-2512.22001-bc3d0ed7, )",
+          "Microsoft.JavaScript.Hermes": "[0.0.0-2604.21001-94aa5e1d, )",
           "Microsoft.SourceLink.GitHub": "[1.1.1, )",
           "Microsoft.WindowsAppSDK": "[1.8.260209005, )",
           "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 15b183fdff9..ea3892aa00e 100644
--- a/packages/sample-custom-component/windows/SampleCustomComponent/packages.experimentalwinui3.lock.json
+++ b/packages/sample-custom-component/windows/SampleCustomComponent/packages.experimentalwinui3.lock.json
@@ -44,8 +44,8 @@
       },
       "Microsoft.JavaScript.Hermes": {
         "type": "Transitive",
-        "resolved": "0.0.0-2512.22001-bc3d0ed7",
-        "contentHash": "aMuCKrIwkCAnT56+oKqmxgfIaAHlKRVt8IiG/jtMbG01QH1mLPwL7wP89jRMsYSJzikW96trqgpUllZZa3O+Qw=="
+        "resolved": "0.0.0-2604.21001-94aa5e1d",
+        "contentHash": "8eHA3O043jIeK7E1gJbzgsdujaDTIBwLSl6pZj7CdQl+ryFqaW88XVU9ogWJPxk5lR2T4cU/OlEJfZynqoyYew=="
       },
       "Microsoft.SourceLink.Common": {
         "type": "Transitive",
@@ -176,7 +176,7 @@
         "dependencies": {
           "Common": "[1.0.0, )",
           "Folly": "[1.0.0, )",
-          "Microsoft.JavaScript.Hermes": "[0.0.0-2512.22001-bc3d0ed7, )",
+          "Microsoft.JavaScript.Hermes": "[0.0.0-2604.21001-94aa5e1d, )",
           "Microsoft.SourceLink.GitHub": "[1.1.1, )",
           "Microsoft.WindowsAppSDK": "[2.0.0-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 b0012878a64..863f7f3e54e 100644
--- a/packages/sample-custom-component/windows/SampleCustomComponent/packages.lock.json
+++ b/packages/sample-custom-component/windows/SampleCustomComponent/packages.lock.json
@@ -44,8 +44,8 @@
       },
       "Microsoft.JavaScript.Hermes": {
         "type": "Transitive",
-        "resolved": "0.0.0-2512.22001-bc3d0ed7",
-        "contentHash": "aMuCKrIwkCAnT56+oKqmxgfIaAHlKRVt8IiG/jtMbG01QH1mLPwL7wP89jRMsYSJzikW96trqgpUllZZa3O+Qw=="
+        "resolved": "0.0.0-2604.21001-94aa5e1d",
+        "contentHash": "8eHA3O043jIeK7E1gJbzgsdujaDTIBwLSl6pZj7CdQl+ryFqaW88XVU9ogWJPxk5lR2T4cU/OlEJfZynqoyYew=="
       },
       "Microsoft.SourceLink.Common": {
         "type": "Transitive",
@@ -176,7 +176,7 @@
         "dependencies": {
           "Common": "[1.0.0, )",
           "Folly": "[1.0.0, )",
-          "Microsoft.JavaScript.Hermes": "[0.0.0-2512.22001-bc3d0ed7, )",
+          "Microsoft.JavaScript.Hermes": "[0.0.0-2604.21001-94aa5e1d, )",
           "Microsoft.SourceLink.GitHub": "[1.1.1, )",
           "Microsoft.WindowsAppSDK": "[1.8.260209005, )",
           "ReactCommon": "[1.0.0, )",
diff --git a/vnext/Desktop.ABITests/packages.experimentalwinui3.lock.json b/vnext/Desktop.ABITests/packages.experimentalwinui3.lock.json
index b02e8eed4de..5aee31d8f4b 100644
--- a/vnext/Desktop.ABITests/packages.experimentalwinui3.lock.json
+++ b/vnext/Desktop.ABITests/packages.experimentalwinui3.lock.json
@@ -26,8 +26,8 @@
       },
       "Microsoft.JavaScript.Hermes": {
         "type": "Transitive",
-        "resolved": "0.0.0-2512.22001-bc3d0ed7",
-        "contentHash": "aMuCKrIwkCAnT56+oKqmxgfIaAHlKRVt8IiG/jtMbG01QH1mLPwL7wP89jRMsYSJzikW96trqgpUllZZa3O+Qw=="
+        "resolved": "0.0.0-2604.21001-94aa5e1d",
+        "contentHash": "8eHA3O043jIeK7E1gJbzgsdujaDTIBwLSl6pZj7CdQl+ryFqaW88XVU9ogWJPxk5lR2T4cU/OlEJfZynqoyYew=="
       },
       "Microsoft.SourceLink.Common": {
         "type": "Transitive",
@@ -186,7 +186,7 @@
           "Common": "[1.0.0, )",
           "Folly": "[1.0.0, )",
           "FollyWin32": "[1.0.0, )",
-          "Microsoft.JavaScript.Hermes": "[0.0.0-2512.22001-bc3d0ed7, )",
+          "Microsoft.JavaScript.Hermes": "[0.0.0-2604.21001-94aa5e1d, )",
           "Microsoft.SourceLink.GitHub": "[1.1.1, )",
           "Microsoft.WindowsAppSDK": "[2.0.0-experimental3, )",
           "ReactCommon": "[1.0.0, )",
@@ -197,7 +197,7 @@
       "react.windows.desktop.dll": {
         "type": "Project",
         "dependencies": {
-          "Microsoft.JavaScript.Hermes": "[0.0.0-2512.22001-bc3d0ed7, )",
+          "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 e501c18381b..02db5a631c9 100644
--- a/vnext/Desktop.ABITests/packages.lock.json
+++ b/vnext/Desktop.ABITests/packages.lock.json
@@ -26,8 +26,8 @@
       },
       "Microsoft.JavaScript.Hermes": {
         "type": "Transitive",
-        "resolved": "0.0.0-2512.22001-bc3d0ed7",
-        "contentHash": "aMuCKrIwkCAnT56+oKqmxgfIaAHlKRVt8IiG/jtMbG01QH1mLPwL7wP89jRMsYSJzikW96trqgpUllZZa3O+Qw=="
+        "resolved": "0.0.0-2604.21001-94aa5e1d",
+        "contentHash": "8eHA3O043jIeK7E1gJbzgsdujaDTIBwLSl6pZj7CdQl+ryFqaW88XVU9ogWJPxk5lR2T4cU/OlEJfZynqoyYew=="
       },
       "Microsoft.SourceLink.Common": {
         "type": "Transitive",
@@ -186,7 +186,7 @@
           "Common": "[1.0.0, )",
           "Folly": "[1.0.0, )",
           "FollyWin32": "[1.0.0, )",
-          "Microsoft.JavaScript.Hermes": "[0.0.0-2512.22001-bc3d0ed7, )",
+          "Microsoft.JavaScript.Hermes": "[0.0.0-2604.21001-94aa5e1d, )",
           "Microsoft.SourceLink.GitHub": "[1.1.1, )",
           "Microsoft.WindowsAppSDK": "[1.8.260209005, )",
           "ReactCommon": "[1.0.0, )",
@@ -197,7 +197,7 @@
       "react.windows.desktop.dll": {
         "type": "Project",
         "dependencies": {
-          "Microsoft.JavaScript.Hermes": "[0.0.0-2512.22001-bc3d0ed7, )",
+          "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 7f216a976f3..5204c086eaa 100644
--- a/vnext/Desktop.DLL/packages.experimentalwinui3.lock.json
+++ b/vnext/Desktop.DLL/packages.experimentalwinui3.lock.json
@@ -10,9 +10,9 @@
       },
       "Microsoft.JavaScript.Hermes": {
         "type": "Direct",
-        "requested": "[0.0.0-2512.22001-bc3d0ed7, )",
-        "resolved": "0.0.0-2512.22001-bc3d0ed7",
-        "contentHash": "aMuCKrIwkCAnT56+oKqmxgfIaAHlKRVt8IiG/jtMbG01QH1mLPwL7wP89jRMsYSJzikW96trqgpUllZZa3O+Qw=="
+        "requested": "[0.0.0-2604.21001-94aa5e1d, )",
+        "resolved": "0.0.0-2604.21001-94aa5e1d",
+        "contentHash": "8eHA3O043jIeK7E1gJbzgsdujaDTIBwLSl6pZj7CdQl+ryFqaW88XVU9ogWJPxk5lR2T4cU/OlEJfZynqoyYew=="
       },
       "Microsoft.SourceLink.GitHub": {
         "type": "Direct",
@@ -178,7 +178,7 @@
           "Common": "[1.0.0, )",
           "Folly": "[1.0.0, )",
           "FollyWin32": "[1.0.0, )",
-          "Microsoft.JavaScript.Hermes": "[0.0.0-2512.22001-bc3d0ed7, )",
+          "Microsoft.JavaScript.Hermes": "[0.0.0-2604.21001-94aa5e1d, )",
           "Microsoft.SourceLink.GitHub": "[1.1.1, )",
           "Microsoft.WindowsAppSDK": "[2.0.0-experimental3, )",
           "ReactCommon": "[1.0.0, )",
diff --git a/vnext/Desktop.DLL/packages.lock.json b/vnext/Desktop.DLL/packages.lock.json
index 731291b0c27..bb42623fbdb 100644
--- a/vnext/Desktop.DLL/packages.lock.json
+++ b/vnext/Desktop.DLL/packages.lock.json
@@ -10,9 +10,9 @@
       },
       "Microsoft.JavaScript.Hermes": {
         "type": "Direct",
-        "requested": "[0.0.0-2512.22001-bc3d0ed7, )",
-        "resolved": "0.0.0-2512.22001-bc3d0ed7",
-        "contentHash": "aMuCKrIwkCAnT56+oKqmxgfIaAHlKRVt8IiG/jtMbG01QH1mLPwL7wP89jRMsYSJzikW96trqgpUllZZa3O+Qw=="
+        "requested": "[0.0.0-2604.21001-94aa5e1d, )",
+        "resolved": "0.0.0-2604.21001-94aa5e1d",
+        "contentHash": "8eHA3O043jIeK7E1gJbzgsdujaDTIBwLSl6pZj7CdQl+ryFqaW88XVU9ogWJPxk5lR2T4cU/OlEJfZynqoyYew=="
       },
       "Microsoft.SourceLink.GitHub": {
         "type": "Direct",
@@ -178,7 +178,7 @@
           "Common": "[1.0.0, )",
           "Folly": "[1.0.0, )",
           "FollyWin32": "[1.0.0, )",
-          "Microsoft.JavaScript.Hermes": "[0.0.0-2512.22001-bc3d0ed7, )",
+          "Microsoft.JavaScript.Hermes": "[0.0.0-2604.21001-94aa5e1d, )",
           "Microsoft.SourceLink.GitHub": "[1.1.1, )",
           "Microsoft.WindowsAppSDK": "[1.8.260209005, )",
           "ReactCommon": "[1.0.0, )",
diff --git a/vnext/Desktop.IntegrationTests/packages.experimentalwinui3.lock.json b/vnext/Desktop.IntegrationTests/packages.experimentalwinui3.lock.json
index 3f0c369c07c..f3624d33e82 100644
--- a/vnext/Desktop.IntegrationTests/packages.experimentalwinui3.lock.json
+++ b/vnext/Desktop.IntegrationTests/packages.experimentalwinui3.lock.json
@@ -10,9 +10,9 @@
       },
       "Microsoft.JavaScript.Hermes": {
         "type": "Direct",
-        "requested": "[0.0.0-2512.22001-bc3d0ed7, )",
-        "resolved": "0.0.0-2512.22001-bc3d0ed7",
-        "contentHash": "aMuCKrIwkCAnT56+oKqmxgfIaAHlKRVt8IiG/jtMbG01QH1mLPwL7wP89jRMsYSJzikW96trqgpUllZZa3O+Qw=="
+        "requested": "[0.0.0-2604.21001-94aa5e1d, )",
+        "resolved": "0.0.0-2604.21001-94aa5e1d",
+        "contentHash": "8eHA3O043jIeK7E1gJbzgsdujaDTIBwLSl6pZj7CdQl+ryFqaW88XVU9ogWJPxk5lR2T4cU/OlEJfZynqoyYew=="
       },
       "Microsoft.Windows.CppWinRT": {
         "type": "Direct",
@@ -183,7 +183,7 @@
           "Common": "[1.0.0, )",
           "Folly": "[1.0.0, )",
           "FollyWin32": "[1.0.0, )",
-          "Microsoft.JavaScript.Hermes": "[0.0.0-2512.22001-bc3d0ed7, )",
+          "Microsoft.JavaScript.Hermes": "[0.0.0-2604.21001-94aa5e1d, )",
           "Microsoft.SourceLink.GitHub": "[1.1.1, )",
           "Microsoft.WindowsAppSDK": "[2.0.0-experimental3, )",
           "ReactCommon": "[1.0.0, )",
@@ -194,7 +194,7 @@
       "react.windows.desktop.dll": {
         "type": "Project",
         "dependencies": {
-          "Microsoft.JavaScript.Hermes": "[0.0.0-2512.22001-bc3d0ed7, )",
+          "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 f9a9523f5fd..3b4e96913a3 100644
--- a/vnext/Desktop.IntegrationTests/packages.lock.json
+++ b/vnext/Desktop.IntegrationTests/packages.lock.json
@@ -10,9 +10,9 @@
       },
       "Microsoft.JavaScript.Hermes": {
         "type": "Direct",
-        "requested": "[0.0.0-2512.22001-bc3d0ed7, )",
-        "resolved": "0.0.0-2512.22001-bc3d0ed7",
-        "contentHash": "aMuCKrIwkCAnT56+oKqmxgfIaAHlKRVt8IiG/jtMbG01QH1mLPwL7wP89jRMsYSJzikW96trqgpUllZZa3O+Qw=="
+        "requested": "[0.0.0-2604.21001-94aa5e1d, )",
+        "resolved": "0.0.0-2604.21001-94aa5e1d",
+        "contentHash": "8eHA3O043jIeK7E1gJbzgsdujaDTIBwLSl6pZj7CdQl+ryFqaW88XVU9ogWJPxk5lR2T4cU/OlEJfZynqoyYew=="
       },
       "Microsoft.Windows.CppWinRT": {
         "type": "Direct",
@@ -183,7 +183,7 @@
           "Common": "[1.0.0, )",
           "Folly": "[1.0.0, )",
           "FollyWin32": "[1.0.0, )",
-          "Microsoft.JavaScript.Hermes": "[0.0.0-2512.22001-bc3d0ed7, )",
+          "Microsoft.JavaScript.Hermes": "[0.0.0-2604.21001-94aa5e1d, )",
           "Microsoft.SourceLink.GitHub": "[1.1.1, )",
           "Microsoft.WindowsAppSDK": "[1.8.260209005, )",
           "ReactCommon": "[1.0.0, )",
@@ -194,7 +194,7 @@
       "react.windows.desktop.dll": {
         "type": "Project",
         "dependencies": {
-          "Microsoft.JavaScript.Hermes": "[0.0.0-2512.22001-bc3d0ed7, )",
+          "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 5ae9698f232..0ca6cb35495 100644
--- a/vnext/Desktop.UnitTests/packages.experimentalwinui3.lock.json
+++ b/vnext/Desktop.UnitTests/packages.experimentalwinui3.lock.json
@@ -21,8 +21,8 @@
       },
       "Microsoft.JavaScript.Hermes": {
         "type": "Transitive",
-        "resolved": "0.0.0-2512.22001-bc3d0ed7",
-        "contentHash": "aMuCKrIwkCAnT56+oKqmxgfIaAHlKRVt8IiG/jtMbG01QH1mLPwL7wP89jRMsYSJzikW96trqgpUllZZa3O+Qw=="
+        "resolved": "0.0.0-2604.21001-94aa5e1d",
+        "contentHash": "8eHA3O043jIeK7E1gJbzgsdujaDTIBwLSl6pZj7CdQl+ryFqaW88XVU9ogWJPxk5lR2T4cU/OlEJfZynqoyYew=="
       },
       "Microsoft.SourceLink.Common": {
         "type": "Transitive",
@@ -181,7 +181,7 @@
           "Common": "[1.0.0, )",
           "Folly": "[1.0.0, )",
           "FollyWin32": "[1.0.0, )",
-          "Microsoft.JavaScript.Hermes": "[0.0.0-2512.22001-bc3d0ed7, )",
+          "Microsoft.JavaScript.Hermes": "[0.0.0-2604.21001-94aa5e1d, )",
           "Microsoft.SourceLink.GitHub": "[1.1.1, )",
           "Microsoft.WindowsAppSDK": "[2.0.0-experimental3, )",
           "ReactCommon": "[1.0.0, )",
diff --git a/vnext/Desktop.UnitTests/packages.lock.json b/vnext/Desktop.UnitTests/packages.lock.json
index c69eb1131c1..d641fac9173 100644
--- a/vnext/Desktop.UnitTests/packages.lock.json
+++ b/vnext/Desktop.UnitTests/packages.lock.json
@@ -21,8 +21,8 @@
       },
       "Microsoft.JavaScript.Hermes": {
         "type": "Transitive",
-        "resolved": "0.0.0-2512.22001-bc3d0ed7",
-        "contentHash": "aMuCKrIwkCAnT56+oKqmxgfIaAHlKRVt8IiG/jtMbG01QH1mLPwL7wP89jRMsYSJzikW96trqgpUllZZa3O+Qw=="
+        "resolved": "0.0.0-2604.21001-94aa5e1d",
+        "contentHash": "8eHA3O043jIeK7E1gJbzgsdujaDTIBwLSl6pZj7CdQl+ryFqaW88XVU9ogWJPxk5lR2T4cU/OlEJfZynqoyYew=="
       },
       "Microsoft.SourceLink.Common": {
         "type": "Transitive",
@@ -181,7 +181,7 @@
           "Common": "[1.0.0, )",
           "Folly": "[1.0.0, )",
           "FollyWin32": "[1.0.0, )",
-          "Microsoft.JavaScript.Hermes": "[0.0.0-2512.22001-bc3d0ed7, )",
+          "Microsoft.JavaScript.Hermes": "[0.0.0-2604.21001-94aa5e1d, )",
           "Microsoft.SourceLink.GitHub": "[1.1.1, )",
           "Microsoft.WindowsAppSDK": "[1.8.260209005, )",
           "ReactCommon": "[1.0.0, )",
diff --git a/vnext/Desktop/packages.experimentalwinui3.lock.json b/vnext/Desktop/packages.experimentalwinui3.lock.json
index b272bccba36..3afddcffd63 100644
--- a/vnext/Desktop/packages.experimentalwinui3.lock.json
+++ b/vnext/Desktop/packages.experimentalwinui3.lock.json
@@ -10,9 +10,9 @@
       },
       "Microsoft.JavaScript.Hermes": {
         "type": "Direct",
-        "requested": "[0.0.0-2512.22001-bc3d0ed7, )",
-        "resolved": "0.0.0-2512.22001-bc3d0ed7",
-        "contentHash": "aMuCKrIwkCAnT56+oKqmxgfIaAHlKRVt8IiG/jtMbG01QH1mLPwL7wP89jRMsYSJzikW96trqgpUllZZa3O+Qw=="
+        "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 76c08840df4..17cf745635f 100644
--- a/vnext/Desktop/packages.lock.json
+++ b/vnext/Desktop/packages.lock.json
@@ -10,9 +10,9 @@
       },
       "Microsoft.JavaScript.Hermes": {
         "type": "Direct",
-        "requested": "[0.0.0-2512.22001-bc3d0ed7, )",
-        "resolved": "0.0.0-2512.22001-bc3d0ed7",
-        "contentHash": "aMuCKrIwkCAnT56+oKqmxgfIaAHlKRVt8IiG/jtMbG01QH1mLPwL7wP89jRMsYSJzikW96trqgpUllZZa3O+Qw=="
+        "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/FollyWin32/packages.lock.json b/vnext/FollyWin32/packages.lock.json
deleted file mode 100644
index 8b50ae9b2c3..00000000000
--- a/vnext/FollyWin32/packages.lock.json
+++ /dev/null
@@ -1,26 +0,0 @@
-{
-  "version": 1,
-  "dependencies": {
-    "native,Version=v0.0": {
-      "boost": {
-        "type": "Transitive",
-        "resolved": "1.83.0",
-        "contentHash": "cy53VNMzysEMvhBixDe8ujPk67Fcj3v6FPHQnH91NYJNLHpc6jxa2xq9ruCaaJjE4M3YrGSHDi4uUSTGBWw6EQ=="
-      },
-      "fmt": {
-        "type": "Project"
-      },
-      "folly": {
-        "type": "Project",
-        "dependencies": {
-          "boost": "[1.83.0, )",
-          "fmt": "[1.0.0, )"
-        }
-      }
-    },
-    "native,Version=v0.0/win": {},
-    "native,Version=v0.0/win-arm64": {},
-    "native,Version=v0.0/win-x64": {},
-    "native,Version=v0.0/win-x86": {}
-  }
-}
\ No newline at end of file
diff --git a/vnext/Microsoft.ReactNative.CsWinRT/packages.experimentalwinui3.lock.json b/vnext/Microsoft.ReactNative.CsWinRT/packages.experimentalwinui3.lock.json
index 8724e697fd6..0091eff5099 100644
--- a/vnext/Microsoft.ReactNative.CsWinRT/packages.experimentalwinui3.lock.json
+++ b/vnext/Microsoft.ReactNative.CsWinRT/packages.experimentalwinui3.lock.json
@@ -37,8 +37,8 @@
       },
       "Microsoft.JavaScript.Hermes": {
         "type": "Transitive",
-        "resolved": "0.0.0-2512.22001-bc3d0ed7",
-        "contentHash": "aMuCKrIwkCAnT56+oKqmxgfIaAHlKRVt8IiG/jtMbG01QH1mLPwL7wP89jRMsYSJzikW96trqgpUllZZa3O+Qw=="
+        "resolved": "0.0.0-2604.21001-94aa5e1d",
+        "contentHash": "8eHA3O043jIeK7E1gJbzgsdujaDTIBwLSl6pZj7CdQl+ryFqaW88XVU9ogWJPxk5lR2T4cU/OlEJfZynqoyYew=="
       },
       "Microsoft.SourceLink.Common": {
         "type": "Transitive",
@@ -169,7 +169,7 @@
         "dependencies": {
           "Common": "[1.0.0, )",
           "Folly": "[1.0.0, )",
-          "Microsoft.JavaScript.Hermes": "[0.0.0-2512.22001-bc3d0ed7, )",
+          "Microsoft.JavaScript.Hermes": "[0.0.0-2604.21001-94aa5e1d, )",
           "Microsoft.SourceLink.GitHub": "[1.1.1, )",
           "Microsoft.WindowsAppSDK": "[2.0.0-experimental3, )",
           "ReactCommon": "[1.0.0, )",
diff --git a/vnext/Microsoft.ReactNative.CsWinRT/packages.lock.json b/vnext/Microsoft.ReactNative.CsWinRT/packages.lock.json
index 35da3b7230e..8f853568ea0 100644
--- a/vnext/Microsoft.ReactNative.CsWinRT/packages.lock.json
+++ b/vnext/Microsoft.ReactNative.CsWinRT/packages.lock.json
@@ -37,8 +37,8 @@
       },
       "Microsoft.JavaScript.Hermes": {
         "type": "Transitive",
-        "resolved": "0.0.0-2512.22001-bc3d0ed7",
-        "contentHash": "aMuCKrIwkCAnT56+oKqmxgfIaAHlKRVt8IiG/jtMbG01QH1mLPwL7wP89jRMsYSJzikW96trqgpUllZZa3O+Qw=="
+        "resolved": "0.0.0-2604.21001-94aa5e1d",
+        "contentHash": "8eHA3O043jIeK7E1gJbzgsdujaDTIBwLSl6pZj7CdQl+ryFqaW88XVU9ogWJPxk5lR2T4cU/OlEJfZynqoyYew=="
       },
       "Microsoft.SourceLink.Common": {
         "type": "Transitive",
@@ -169,7 +169,7 @@
         "dependencies": {
           "Common": "[1.0.0, )",
           "Folly": "[1.0.0, )",
-          "Microsoft.JavaScript.Hermes": "[0.0.0-2512.22001-bc3d0ed7, )",
+          "Microsoft.JavaScript.Hermes": "[0.0.0-2604.21001-94aa5e1d, )",
           "Microsoft.SourceLink.GitHub": "[1.1.1, )",
           "Microsoft.WindowsAppSDK": "[1.8.260209005, )",
           "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 c5118de8759..1bd11c85255 100644
--- a/vnext/Microsoft.ReactNative.IntegrationTests/packages.experimentalwinui3.lock.json
+++ b/vnext/Microsoft.ReactNative.IntegrationTests/packages.experimentalwinui3.lock.json
@@ -50,8 +50,8 @@
       },
       "Microsoft.JavaScript.Hermes": {
         "type": "Transitive",
-        "resolved": "0.0.0-2512.22001-bc3d0ed7",
-        "contentHash": "aMuCKrIwkCAnT56+oKqmxgfIaAHlKRVt8IiG/jtMbG01QH1mLPwL7wP89jRMsYSJzikW96trqgpUllZZa3O+Qw=="
+        "resolved": "0.0.0-2604.21001-94aa5e1d",
+        "contentHash": "8eHA3O043jIeK7E1gJbzgsdujaDTIBwLSl6pZj7CdQl+ryFqaW88XVU9ogWJPxk5lR2T4cU/OlEJfZynqoyYew=="
       },
       "Microsoft.SourceLink.Common": {
         "type": "Transitive",
@@ -182,7 +182,7 @@
         "dependencies": {
           "Common": "[1.0.0, )",
           "Folly": "[1.0.0, )",
-          "Microsoft.JavaScript.Hermes": "[0.0.0-2512.22001-bc3d0ed7, )",
+          "Microsoft.JavaScript.Hermes": "[0.0.0-2604.21001-94aa5e1d, )",
           "Microsoft.SourceLink.GitHub": "[1.1.1, )",
           "Microsoft.WindowsAppSDK": "[2.0.0-experimental3, )",
           "ReactCommon": "[1.0.0, )",
diff --git a/vnext/Microsoft.ReactNative.IntegrationTests/packages.lock.json b/vnext/Microsoft.ReactNative.IntegrationTests/packages.lock.json
index ac5bd28d40e..6a8b1c01e7f 100644
--- a/vnext/Microsoft.ReactNative.IntegrationTests/packages.lock.json
+++ b/vnext/Microsoft.ReactNative.IntegrationTests/packages.lock.json
@@ -50,8 +50,8 @@
       },
       "Microsoft.JavaScript.Hermes": {
         "type": "Transitive",
-        "resolved": "0.0.0-2512.22001-bc3d0ed7",
-        "contentHash": "aMuCKrIwkCAnT56+oKqmxgfIaAHlKRVt8IiG/jtMbG01QH1mLPwL7wP89jRMsYSJzikW96trqgpUllZZa3O+Qw=="
+        "resolved": "0.0.0-2604.21001-94aa5e1d",
+        "contentHash": "8eHA3O043jIeK7E1gJbzgsdujaDTIBwLSl6pZj7CdQl+ryFqaW88XVU9ogWJPxk5lR2T4cU/OlEJfZynqoyYew=="
       },
       "Microsoft.SourceLink.Common": {
         "type": "Transitive",
@@ -182,7 +182,7 @@
         "dependencies": {
           "Common": "[1.0.0, )",
           "Folly": "[1.0.0, )",
-          "Microsoft.JavaScript.Hermes": "[0.0.0-2512.22001-bc3d0ed7, )",
+          "Microsoft.JavaScript.Hermes": "[0.0.0-2604.21001-94aa5e1d, )",
           "Microsoft.SourceLink.GitHub": "[1.1.1, )",
           "Microsoft.WindowsAppSDK": "[1.8.260209005, )",
           "ReactCommon": "[1.0.0, )",
diff --git a/vnext/Microsoft.ReactNative/packages.experimentalwinui3.lock.json b/vnext/Microsoft.ReactNative/packages.experimentalwinui3.lock.json
index 16a48c270a7..33e4f527cba 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": "[0.0.0-2512.22001-bc3d0ed7, )",
-        "resolved": "0.0.0-2512.22001-bc3d0ed7",
-        "contentHash": "aMuCKrIwkCAnT56+oKqmxgfIaAHlKRVt8IiG/jtMbG01QH1mLPwL7wP89jRMsYSJzikW96trqgpUllZZa3O+Qw=="
+        "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 af88db7ff69..bd7d53ae9ff 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": "[0.0.0-2512.22001-bc3d0ed7, )",
-        "resolved": "0.0.0-2512.22001-bc3d0ed7",
-        "contentHash": "aMuCKrIwkCAnT56+oKqmxgfIaAHlKRVt8IiG/jtMbG01QH1mLPwL7wP89jRMsYSJzikW96trqgpUllZZa3O+Qw=="
+        "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 f31aa12b4de..829633b5e5f 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)' == ''">0.0.0-2512.22001-bc3d0ed7</HermesVersion>
+    <HermesVersion Condition="'$(HermesVersion)' == ''">0.0.0-2604.21001-94aa5e1d</HermesVersion>
     <HermesPackageName Condition="'$(HermesPackageName)' == ''">Microsoft.JavaScript.Hermes</HermesPackageName>
     <HermesPackage Condition="'$(HermesPackage)' == '' And Exists('$(PkgMicrosoft_JavaScript_Hermes)')">$(PkgMicrosoft_JavaScript_Hermes)</HermesPackage>
     <HermesPackage Condition="'$(HermesPackage)' == ''">$(NuGetPackageRoot)\$(HermesPackageName)\$(HermesVersion)</HermesPackage>
diff --git a/vnext/ReactCommon.UnitTests/packages.experimentalwinui3.lock.json b/vnext/ReactCommon.UnitTests/packages.experimentalwinui3.lock.json
index f95cf609fc2..0b5066f2f18 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": "0.0.0-2512.22001-bc3d0ed7",
-        "contentHash": "aMuCKrIwkCAnT56+oKqmxgfIaAHlKRVt8IiG/jtMbG01QH1mLPwL7wP89jRMsYSJzikW96trqgpUllZZa3O+Qw=="
+        "resolved": "0.0.0-2604.21001-94aa5e1d",
+        "contentHash": "8eHA3O043jIeK7E1gJbzgsdujaDTIBwLSl6pZj7CdQl+ryFqaW88XVU9ogWJPxk5lR2T4cU/OlEJfZynqoyYew=="
       },
       "Microsoft.SourceLink.Common": {
         "type": "Transitive",
@@ -182,7 +182,7 @@
           "Common": "[1.0.0, )",
           "Folly": "[1.0.0, )",
           "FollyWin32": "[1.0.0, )",
-          "Microsoft.JavaScript.Hermes": "[0.0.0-2512.22001-bc3d0ed7, )",
+          "Microsoft.JavaScript.Hermes": "[0.0.0-2604.21001-94aa5e1d, )",
           "Microsoft.SourceLink.GitHub": "[1.1.1, )",
           "Microsoft.WindowsAppSDK": "[2.0.0-experimental3, )",
           "ReactCommon": "[1.0.0, )",
diff --git a/vnext/ReactCommon.UnitTests/packages.lock.json b/vnext/ReactCommon.UnitTests/packages.lock.json
index 9a8860b522b..b742a11a40d 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": "0.0.0-2512.22001-bc3d0ed7",
-        "contentHash": "aMuCKrIwkCAnT56+oKqmxgfIaAHlKRVt8IiG/jtMbG01QH1mLPwL7wP89jRMsYSJzikW96trqgpUllZZa3O+Qw=="
+        "resolved": "0.0.0-2604.21001-94aa5e1d",
+        "contentHash": "8eHA3O043jIeK7E1gJbzgsdujaDTIBwLSl6pZj7CdQl+ryFqaW88XVU9ogWJPxk5lR2T4cU/OlEJfZynqoyYew=="
       },
       "Microsoft.SourceLink.Common": {
         "type": "Transitive",
@@ -182,7 +182,7 @@
           "Common": "[1.0.0, )",
           "Folly": "[1.0.0, )",
           "FollyWin32": "[1.0.0, )",
-          "Microsoft.JavaScript.Hermes": "[0.0.0-2512.22001-bc3d0ed7, )",
+          "Microsoft.JavaScript.Hermes": "[0.0.0-2604.21001-94aa5e1d, )",
           "Microsoft.SourceLink.GitHub": "[1.1.1, )",
           "Microsoft.WindowsAppSDK": "[1.8.260209005, )",
           "ReactCommon": "[1.0.0, )",
diff --git a/vnext/fmt/packages.lock.json b/vnext/fmt/packages.lock.json
deleted file mode 100644
index a31237b580e..00000000000
--- a/vnext/fmt/packages.lock.json
+++ /dev/null
@@ -1,13 +0,0 @@
-{
-  "version": 1,
-  "dependencies": {
-    "native,Version=v0.0": {},
-    "native,Version=v0.0/win10-arm": {},
-    "native,Version=v0.0/win10-arm-aot": {},
-    "native,Version=v0.0/win10-arm64-aot": {},
-    "native,Version=v0.0/win10-x64": {},
-    "native,Version=v0.0/win10-x64-aot": {},
-    "native,Version=v0.0/win10-x86": {},
-    "native,Version=v0.0/win10-x86-aot": {}
-  }
-}
\ No newline at end of file