diff --git a/CHANGELOG.md b/CHANGELOG.md
index c1a975b..477d265 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,6 +4,41 @@ All notable changes to flutter-tvos will be documented here.
 
 ## [Unreleased]
 
+## [1.4.2] - 2026-07-21
+
+### Changed
+
+- Bumped the pinned Flutter SDK to **3.44.7** (`84fc5cbb223b`).
+- Engine artifacts are now `v1.0.1-flutter3.44.7`. These are **byte-identical**
+  to `v1.0.1-flutter3.44.6`, republished under the new name rather than
+  rebuilt: nothing in 3.44.7 reaches the tvOS engine. The only functional
+  change in the range is Android-side (`FlutterRenderer.java`), `DEPS` is
+  byte-identical, the Dart submodule is unchanged, and `darwin/`, `ios/` and
+  `impeller/` are untouched. The remaining commits are CI config and changelog
+  text.
+
+Verified with these artifacts against the 3.44.7 SDK before shipping: AOT on a
+physical Apple TV 4K (tvOS 26.5) keeps platform identity intact
+(`operatingSystem=tvos`, `isTvOS=true`), and a JIT/debug run on a tvOS 17.5
+simulator is clean with zero `Target OS is incompatible` errors, so the
+metallib fix from 1.4.1 still holds on older runtimes.
+
+### Fixed
+
+- `Platform.isTvOS` now compiles in **debug** builds. It previously worked only
+  in profile/release: debug compiled against the stock Flutter SDK, which does
+  not declare the getter, so an app using the API the README recommends failed
+  to build with `Member not found: 'isTvOS'`. Present since the getter was
+  introduced — reproduced identically on 1.4.1 — and easy to miss because the
+  *values* (`operatingSystem`, `isIOS`) resolve at runtime from the device
+  engine in JIT and are correct in every mode; only the new member was missing
+  from the type checker's view.
+
+  Debug now compiles against the same patched `flutter_patched_sdk` as profile,
+  which the `host_debug_unopt` artifact already shipped. Verified on a tvOS 17.5
+  simulator (`isTvOS=true` in debug, `isAndroid`/`isMacOS` unaffected), AOT on a
+  physical Apple TV 4K is unchanged, and hot reload still works.
+
 <!-- Contributors: add entries for user-visible changes here (see CONTRIBUTING.md).
      Do not add a version heading or bump pubspec.yaml — maintainers assign
      versions at release time. -->
diff --git a/README.md b/README.md
index cff284a..b132655 100644
--- a/README.md
+++ b/README.md
@@ -8,9 +8,9 @@ A Flutter toolchain for building and running Flutter apps on **Apple TV (tvOS)**
 
 ## Current version
 
-- flutter-tvos: `1.4.1`
-- Flutter SDK: `3.44.6` (`ee80f08bbf97172ec030b8751ceab557177a34a6`)
-- tvOS engine artifacts: `v1.0.1-flutter3.44.6` (origin-signed)
+- flutter-tvos: `1.4.2`
+- Flutter SDK: `3.44.7` (`84fc5cbb223bc12f83d65b647ff8a56caf779ffd`)
+- tvOS engine artifacts: `v1.0.1-flutter3.44.7` (origin-signed)
 
 ## Installation
 
diff --git a/bin/internal/engine.version b/bin/internal/engine.version
index 5eb99a5..e734359 100644
--- a/bin/internal/engine.version
+++ b/bin/internal/engine.version
@@ -1 +1 @@
-v1.0.1-flutter3.44.6
+v1.0.1-flutter3.44.7
diff --git a/bin/internal/flutter.version b/bin/internal/flutter.version
index 06222d4..5cf22c6 100644
--- a/bin/internal/flutter.version
+++ b/bin/internal/flutter.version
@@ -1 +1 @@
-ee80f08bbf97172ec030b8751ceab557177a34a6
\ No newline at end of file
+84fc5cbb223bc12f83d65b647ff8a56caf779ffd
diff --git a/lib/tvos_artifacts.dart b/lib/tvos_artifacts.dart
index 9a956fe..7990b6f 100644
--- a/lib/tvos_artifacts.dart
+++ b/lib/tvos_artifacts.dart
@@ -53,24 +53,28 @@ class TvosArtifacts extends CachedArtifacts {
       }
     }
 
-    // For AOT (profile/release) builds, compile the app kernel against OUR
-    // patched `flutter_patched_sdk` (shipped inside the host engine artifact)
-    // rather than the stock Flutter checkout's. The patched dart:io
-    // `platform.dart` defines `isIOS = operatingSystem == "ios" || == "tvos"`
-    // and adds the `isTvOS` getter, so the un-folded platform-const getters
-    // evaluate correctly at runtime on tvOS. This is the companion to
-    // `TvosKernelSnapshot.build()`, which passes `targetOS: null` so those
-    // getters are not const-folded to "ios" at compile time.
+    // Compile the app kernel against OUR patched `flutter_patched_sdk`
+    // (shipped inside the host engine artifact) rather than the stock Flutter
+    // checkout's. The patched dart:io `platform.dart` defines
+    // `isIOS = operatingSystem == "ios" || == "tvos"` and adds the `isTvOS`
+    // getter, so the un-folded platform-const getters evaluate correctly at
+    // runtime on tvOS. This is the companion to `TvosKernelSnapshot.build()`,
+    // which passes `targetOS: null` so those getters are not const-folded to
+    // "ios" at compile time.
     //
-    // Debug (JIT) deliberately keeps the stock SDK: platform identity there is
-    // resolved by the device engine's own (patched) core libraries at runtime,
-    // so the compile SDK is irrelevant and we avoid disturbing the proven
-    // debug path. We only need our patched SDK where gen_snapshot bakes the
-    // SDK code into the app snapshot — i.e. precompiled builds.
-    if ((mode?.isPrecompiled ?? false) &&
-        (artifact == Artifact.flutterPatchedSdkPath ||
-            artifact == Artifact.platformKernelDill)) {
-      final String patchedSdkDir = _hostPatchedSdkDirectory(mode!);
+    // This applies to debug as well, not just AOT. Platform identity *values*
+    // do resolve at runtime in JIT — dart:io comes from the device engine's
+    // own patched core libraries — so for `operatingSystem` and `isIOS` the
+    // compile SDK genuinely is irrelevant there. But `isTvOS` is a member the
+    // stock SDK does not declare at all, and the frontend server type-checks
+    // against the compile SDK before anything runs: an app touching
+    // `Platform.isTvOS` failed to build in debug with
+    // `Member not found: 'isTvOS'` while compiling fine in profile/release.
+    // Pointing debug at the same patched SDK (which `host_debug_unopt` already
+    // ships) makes the getter exist in every mode.
+    if (artifact == Artifact.flutterPatchedSdkPath ||
+        artifact == Artifact.platformKernelDill) {
+      final String patchedSdkDir = _hostPatchedSdkDirectory(mode ?? BuildMode.debug);
       if (artifact == Artifact.platformKernelDill) {
         return _fileSystem.path.join(patchedSdkDir, 'platform_strong.dill');
       }
diff --git a/pubspec.yaml b/pubspec.yaml
index 4982202..2a472a3 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -1,6 +1,6 @@
 name: flutter_tvos
 description: Flutter CLI tool for building and running Flutter apps on Apple TV (tvOS). A custom embedder wrapping Flutter SDK with tvOS-specific build targets, device management, and plugin support.
-version: 1.4.1
+version: 1.4.2
 homepage: https://fluttertv.dev
 repository: https://github.com/fluttertv/flutter-tvos
 publish_to: "none"
diff --git a/test/general/tvos_artifacts_test.dart b/test/general/tvos_artifacts_test.dart
index 2b4387f..2aef9aa 100644
--- a/test/general/tvos_artifacts_test.dart
+++ b/test/general/tvos_artifacts_test.dart
@@ -68,23 +68,33 @@ void main() {
       );
     });
 
-    test('debug flutterPatchedSdkPath falls through to stock resolution', () {
-      // Debug resolves platform identity at runtime via the device engine, so
-      // the override is intentionally NOT applied — the path must come from
-      // the stock CachedArtifacts logic, not our engine_artifacts host SDK.
-      final String path = artifacts.getArtifactPath(
-        Artifact.flutterPatchedSdkPath,
-        mode: BuildMode.debug,
+    test('debug also uses the patched SDK (host_debug_unopt)', () {
+      // Debug resolves platform identity *values* at runtime via the device
+      // engine, so for `operatingSystem` and `isIOS` the compile SDK is
+      // irrelevant. But `isTvOS` is a member the stock SDK does not declare,
+      // and the frontend server type-checks against the compile SDK before
+      // anything runs — so with stock resolution an app touching
+      // `Platform.isTvOS` failed to build in debug with
+      // `Member not found: 'isTvOS'` while compiling fine in profile/release.
+      // Debug uses the same non-product SDK as profile.
+      expect(
+        artifacts.getArtifactPath(Artifact.flutterPatchedSdkPath, mode: BuildMode.debug),
+        '/engine_artifacts/host_debug_unopt/flutter_patched_sdk',
+      );
+      expect(
+        artifacts.getArtifactPath(Artifact.platformKernelDill, mode: BuildMode.debug),
+        '/engine_artifacts/host_debug_unopt/flutter_patched_sdk/platform_strong.dill',
       );
-      expect(path, isNot(contains('engine_artifacts')));
     });
 
-    test('debug platformKernelDill falls through to stock resolution', () {
-      final String path = artifacts.getArtifactPath(
-        Artifact.platformKernelDill,
-        mode: BuildMode.debug,
+    test('a null mode resolves to the debug (non-product) SDK', () {
+      // getArtifactPath is reachable without a mode; it must not throw and
+      // must not silently pick the product SDK, which would drop entry-point
+      // classes the JIT engine looks up natively.
+      expect(
+        artifacts.getArtifactPath(Artifact.flutterPatchedSdkPath),
+        '/engine_artifacts/host_debug_unopt/flutter_patched_sdk',
       );
-      expect(path, isNot(contains('engine_artifacts')));
     });
 
     test('handles the nested directory layout from zip extraction', () {