diff --git a/‎.changeset/native-update-release-assets.md‎
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diff --git a/‎README.md‎
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diff --git a/‎apps/pythinker-code/scripts/native/produce-manifest.mjs‎
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diff --git a/‎apps/pythinker-code/src/cli/update/native-manifest.ts‎
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diff --git a/‎apps/pythinker-code/src/cli/update/native-stage.ts‎
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diff --git a/‎apps/pythinker-code/src/constant/app.ts‎
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diff --git a/‎apps/pythinker-code/test/cli/update/native-manifest.test.ts‎
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diff --git a/‎apps/pythinker-code/test/scripts/native/release-artifacts.test.ts‎
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diff --git a/‎scripts/release/cdn-consistency.mjs‎
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diff --git a/‎scripts/release/cdn-consistency.test.mjs‎
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@@ -0,0 +1,5 @@
+---
+'@pymodel/pythinker-code': patch
+---
+
+Native `pythinker update` downloads the new binary from the GitHub release again; native installs on 2.2.0–2.4.1 need one reinstall to receive it (see #354).
@@ -82,6 +82,8 @@ The CLI ships as a native binary, so there is no Node.js prerequisite.
 | Nix | `nix run github:PyModel/pythinker-code` |
 | npm | `npm install -g @pymodel/pythinker-code` (needs Node.js 24.15+) |
 
+> Native install on 2.2.0–2.4.1? `pythinker update` cannot download new versions there. Run the install command again once to get a later version ([#354](https://github.com/PyModel/pythinker-code/issues/354)).
+
 ```sh
 cd your-project
 pythinker
 
@@ -9,6 +9,10 @@
  * (produced by package.mjs across the 6 native-build matrix runners). The
  * zip is the only form in which binaries leave the matrix runners, so this
  * script extracts each bare executable and emits next to it:
+ *   pythinker-code-<target>[.exe]     the bare binary; `filename` in the
+ *                                manifest and `url` in the CDN latest.json
+ *                                both name it, and updaters without zstd
+ *                                support download it
  *   pythinker-code-<target>.zst       zstd -19, consumed by the staged updater
  *   pythinker-code-<target>.tar.gz    consumed by install.sh / install.ps1
  *   <artifact>.sha256            sidecars in `<hex>  <name>` format
@@ -23,7 +27,7 @@
 import { execFile } from 'node:child_process';
 import { createHash } from 'node:crypto';
 import { createReadStream } from 'node:fs';
-import { mkdtemp, readdir, rm, writeFile } from 'node:fs/promises';
+import { copyFile, mkdtemp, readdir, rm, writeFile } from 'node:fs/promises';
 import { tmpdir } from 'node:os';
 import { basename, join, resolve } from 'node:path';
 import { promisify } from 'node:util';
@@ -71,8 +75,8 @@ for (const sumFile of sumFiles.sort()) {
   const target = basename(sumFile, '.sha256').replace(/^pythinker-code-/, '').replace(/\.zip$/, '');
   const zipName = `pythinker-code-${target}.zip`;
   const exeName = target.startsWith('win32') ? 'pythinker.exe' : 'pythinker';
-  // The CDN bare-binary layout carries the .exe suffix on Windows
-  // (src/constant/app.ts); the updater's fallback downloads this filename.
+  // Windows keeps the .exe suffix. Every file the manifest names is uploaded
+  // to the release, so the updater can always fetch it.
   const binaryName = target.startsWith('win32') ? `pythinker-code-${target}.exe` : `pythinker-code-${target}`;
   const artifactBase = `pythinker-code-${target}`;
   const zstName = `${artifactBase}.zst`;
@@ -83,6 +87,8 @@ for (const sumFile of sumFiles.sort()) {
     await run('unzip', ['-o', resolve(inputDir, zipName), '-d', workDir]);
     const exePath = join(workDir, exeName);
     const binaryChecksum = await sha256File(exePath);
+    await copyFile(exePath, resolve(inputDir, binaryName));
+    await writeFile(resolve(inputDir, `${binaryName}.sha256`), `${binaryChecksum}  ${binaryName}\n`);
     await run('zstd', ['-T0', '-19', '-q', '-f', '-o', resolve(inputDir, zstName), exePath]);
     await run('tar', ['-C', workDir, '-czf', resolve(inputDir, tarballName), exeName]);
 
 
@@ -1,5 +1,5 @@
 /**
- * Per-release native artifact manifest (`/binaries/<version>/manifest.json`).
+ * Per-release native artifact manifest (`manifest.json` on the GitHub release).
  *
  * Published alongside the release and consumed by the install scripts; the
  * staged updater reuses the same file so checksums and file names have a
@@ -12,7 +12,7 @@
 import { valid } from 'semver';
 import { z } from 'zod';
 
-import { pythinkerCodeCdnBinariesBase } from '#/constant/app';
+import { pythinkerCodeReleaseAssetUrl } from '#/constant/app';
 
 const MANIFEST_FETCH_TIMEOUT_MS = 10_000;
 
@@ -47,11 +47,11 @@ export type NativeReleaseManifest = z.infer<typeof NativeReleaseManifestSchema>;
 export type NativePlatformEntry = z.infer<typeof PlatformEntrySchema>;
 
 export function nativeManifestUrl(version: string): string {
-  return `${pythinkerCodeCdnBinariesBase()}/${version}/manifest.json`;
+  return pythinkerCodeReleaseAssetUrl(version, 'manifest.json');
 }
 
 export function nativeBinaryUrl(version: string, filename: string): string {
-  return `${pythinkerCodeCdnBinariesBase()}/${version}/${filename}`;
+  return pythinkerCodeReleaseAssetUrl(version, filename);
 }
 
 /**
 
@@ -3,9 +3,10 @@
  * without touching the running executable. The actual swap happens on the
  * next startup (see `native-swap.ts`).
  *
- * The CDN serves the bare platform binary (e.g. `pythinker-code-win32-x64.exe`),
- * whose sha256 comes from the per-release manifest over HTTPS — a staged
- * binary is byte-exact what the release pipeline produced.
+ * The GitHub release serves the bare platform binary (e.g.
+ * `pythinker-code-win32-x64.exe`) and its `.zst` variant, whose sha256 comes
+ * from the per-release manifest over HTTPS — a staged binary is byte-exact
+ * what the release pipeline produced.
  */
 
 import { createHash } from 'node:crypto';
@@ -440,7 +441,7 @@ export async function stageNativeUpdate(
     // would still be adopted here and reported as success, only for the
     // startup swap's claim-time re-verify to reject and discard it. Compare
     // the actual digest before adopting; a mismatch falls through and
-    // re-stages from the CDN (published under a new generation name — the
+    // re-stages from the release (published under a new generation name — the
     // damaged exe is left for the age-gated orphan cleanup).
     const digest = await hashFileSha256(stagedExePath(options.exePath, existing));
     if (digest === existing.sha256) {
 
@@ -108,11 +108,15 @@ export function pythinkerCodeCdnLatestUrl(): string {
 export function pythinkerCodeCdnLatestJsonUrl(): string {
   return `${pythinkerCodeCdnBase()}/latest.json`;
 }
-// Per-release native artifacts: `/binaries/<version>/manifest.json` +
-// `/binaries/<version>/pythinker-code-<target>[.exe]` — the bare platform binary
-// (same layout install.ps1 consumes).
-export function pythinkerCodeCdnBinariesBase(): string {
-  return `${pythinkerCodeCdnBase()}/binaries`;
+// Per-release native artifacts live on the GitHub release for that version:
+// `manifest.json` plus every file it names (bare binary and `.zst`). The
+// release pipeline uploads them and `latest.json` points at the same URLs.
+// The CDN serves no `/binaries/` route — it answers any unknown path with the
+// site's HTML and a 200.
+const PYTHINKER_CODE_GITHUB_RELEASES_BASE = 'https://github.com/PyModel/pythinker-code/releases/download';
+export function pythinkerCodeReleaseAssetUrl(version: string, filename: string): string {
+  const tag = encodeURIComponent(`${NPM_PACKAGE_NAME}@${version}`);
+  return `${PYTHINKER_CODE_GITHUB_RELEASES_BASE}/${tag}/${filename}`;
 }
 // The marketplace env override name lives in the shared agent-core-v2 plugin
 // domain (agent-gateway consumes it from there). Deep-path import: this module is
 
@@ -6,7 +6,6 @@ import {
   nativeManifestUrl,
   selectPlatformEntry,
 } from '#/cli/update/native-manifest';
-import { pythinkerCodeCdnBinariesBase } from '#/constant/app';
 
 const VERSION = '0.7.0';
 
@@ -195,10 +194,9 @@ describe('selectPlatformEntry', () => {
 });
 
 describe('url helpers', () => {
-  it('builds the manifest and binary URLs from the binaries base', () => {
-    expect(nativeManifestUrl(VERSION)).toBe(`${pythinkerCodeCdnBinariesBase()}/${VERSION}/manifest.json`);
-    expect(nativeBinaryUrl(VERSION, 'pythinker-code-win32-x64.zip')).toBe(
-      `${pythinkerCodeCdnBinariesBase()}/${VERSION}/pythinker-code-win32-x64.zip`,
-    );
+  it('points the manifest and binaries at the GitHub release for the version', () => {
+    const base = `https://github.com/PyModel/pythinker-code/releases/download/%40pymodel%2Fpythinker-code%40${VERSION}`;
+    expect(nativeManifestUrl(VERSION)).toBe(`${base}/manifest.json`);
+    expect(nativeBinaryUrl(VERSION, 'pythinker-code-win32-x64.exe')).toBe(`${base}/pythinker-code-win32-x64.exe`);
   });
 });
@@ -97,6 +97,8 @@ describe('native release artifacts', () => {
     for (const name of [
       `pythinker-code-${target}.zip`,
       `pythinker-code-${target}.zip.sha256`,
+      `pythinker-code-${target}`,
+      `pythinker-code-${target}.sha256`,
       `pythinker-code-${target}.zst`,
       `pythinker-code-${target}.zst.sha256`,
       `pythinker-code-${target}.tar.gz`,
@@ -168,6 +170,11 @@ describe('native release artifacts', () => {
         },
       },
     });
+    const bare = resolve(artifactsDir, `pythinker-code-${target}`);
+    expect(readFileSync(bare, 'utf-8')).toBe(binaryContent);
+    expect(readFileSync(`${bare}.sha256`, 'utf-8')).toBe(
+      `${sha256(Buffer.from(binaryContent))}  pythinker-code-${target}\n`,
+    );
   });
 
   it('keeps the .exe suffix in Windows manifest filenames', async () => {
@@ -199,6 +206,7 @@ describe('native release artifacts', () => {
       expect(entry.filename).toBe('pythinker-code-win32-x64.exe');
       expect(entry.checksum).toBe(sha256(binaryContent));
       expect(entry.compressed.filename).toBe('pythinker-code-win32-x64.zst');
+      expect(await readFile(join(releaseDir, entry.filename))).toEqual(binaryContent);
     } finally {
       rmSync(releaseDir, { recursive: true, force: true });
     }
 
@@ -114,3 +114,48 @@ export async function pollCdnUntilCaughtUp(options) {
     await sleep(intervalMs);
   }
 }
+
+/**
+ * Every download URL a client can be sent to for `version`: each
+ * `platforms[*].url` in the CDN `latest.json`, plus every file the release
+ * `manifest.json` names, resolved against the release asset base.
+ *
+ * A matching version string proves nothing about these: 2.4.0 and 2.4.1
+ * shipped with the CDN in sync while every bare-binary URL returned 404.
+ */
+export function collectReleaseDownloadUrls({ latestJson, releaseManifest, releaseAssetUrl }) {
+  const urls = new Set();
+  for (const entry of Object.values(latestJson?.platforms ?? {})) {
+    if (typeof entry?.url === 'string') urls.add(entry.url);
+  }
+  for (const entry of Object.values(releaseManifest?.platforms ?? {})) {
+    for (const name of [entry?.filename, entry?.compressed?.filename, entry?.zstd?.file]) {
+      if (typeof name === 'string') urls.add(releaseAssetUrl(name));
+    }
+  }
+  return [...urls].sort((left, right) => left.localeCompare(right));
+}
+
+/**
+ * HEAD each URL and return the ones that do not answer 2xx. A transport error,
+ * 5xx, 403 or 429 (GitHub rate limiting) is retried `attempts` times in total;
+ * any other 4xx is final at once.
+ */
+export async function findUnreachableUrls({ fetchImpl, sleep, urls, attempts = 3, retryDelayMs = 5_000 }) {
+  const unreachable = [];
+  for (const url of urls) {
+    let status = 'unreachable';
+    for (let attempt = 1; attempt <= attempts; attempt += 1) {
+      try {
+        const response = await fetchImpl(url, { method: 'HEAD' });
+        status = response.status;
+        if (response.ok || (status >= 400 && status < 500 && status !== 403 && status !== 429)) break;
+      } catch (error) {
+        status = error instanceof Error ? error.message : 'unreachable';
+      }
+      if (attempt < attempts) await sleep(retryDelayMs);
+    }
+    if (typeof status !== 'number' || status < 200 || status >= 300) unreachable.push({ url, status });
+  }
+  return unreachable;
+}
@@ -0,0 +1,102 @@
+import assert from 'node:assert/strict';
+import test from 'node:test';
+
+import { collectReleaseDownloadUrls, findUnreachableUrls } from './cdn-consistency.mjs';
+
+const BASE = 'https://github.com/PyModel/pythinker-code/releases/download/%40pymodel%2Fpythinker-code%402.4.1';
+const releaseAssetUrl = (name) => `${BASE}/${name}`;
+
+void test('collects latest.json urls and every file the release manifest names', () => {
+  const urls = collectReleaseDownloadUrls({
+    latestJson: {
+      version: '2.4.1',
+      platforms: { 'darwin-arm64': { url: `${BASE}/pythinker-code-darwin-arm64`, sha256: 'a' } },
+    },
+    releaseManifest: {
+      platforms: {
+        'darwin-arm64': {
+          filename: 'pythinker-code-darwin-arm64',
+          compressed: { filename: 'pythinker-code-darwin-arm64.zst' },
+        },
+        'win32-x64': { filename: 'pythinker-code-win32-x64.exe', zstd: { file: 'pythinker-code-win32-x64.zst' } },
+      },
+    },
+    releaseAssetUrl,
+  });
+  assert.deepEqual(urls, [
+    `${BASE}/pythinker-code-darwin-arm64`,
+    `${BASE}/pythinker-code-darwin-arm64.zst`,
+    `${BASE}/pythinker-code-win32-x64.exe`,
+    `${BASE}/pythinker-code-win32-x64.zst`,
+  ]);
+});
+
+void test('collects nothing from manifests without platforms', () => {
+  assert.deepEqual(collectReleaseDownloadUrls({ latestJson: {}, releaseManifest: {}, releaseAssetUrl }), []);
+});
+
+void test('reports a 404 at once and passes a 200', async () => {
+  const calls = [];
+  const unreachable = await findUnreachableUrls({
+    fetchImpl: async (url, init) => {
+      calls.push([url, init.method]);
+      return new Response(null, { status: url.endsWith('.zst') ? 200 : 404 });
+    },
+    sleep: async () => {},
+    urls: ['a.zst', 'a'],
+  });
+  assert.deepEqual(unreachable, [{ url: 'a', status: 404 }]);
+  assert.deepEqual(calls, [
+    ['a.zst', 'HEAD'],
+    ['a', 'HEAD'],
+  ]);
+});
+
+void test('retries transport errors and 5xx, then reports the last failure', async () => {
+  let calls = 0;
+  const sleeps = [];
+  const unreachable = await findUnreachableUrls({
+    fetchImpl: async () => {
+      calls += 1;
+      if (calls === 1) throw new Error('socket hang up');
+      return new Response(null, { status: 503 });
+    },
+    sleep: async (ms) => {
+      sleeps.push(ms);
+    },
+    urls: ['a'],
+    attempts: 3,
+    retryDelayMs: 10,
+  });
+  assert.equal(calls, 3);
+  assert.deepEqual(sleeps, [10, 10]);
+  assert.deepEqual(unreachable, [{ url: 'a', status: 503 }]);
+});
+
+void test('recovers when a retry succeeds', async () => {
+  let calls = 0;
+  const unreachable = await findUnreachableUrls({
+    fetchImpl: async () => {
+      calls += 1;
+      return new Response(null, { status: calls === 1 ? 502 : 200 });
+    },
+    sleep: async () => {},
+    urls: ['a'],
+  });
+  assert.deepEqual(unreachable, []);
+  assert.equal(calls, 2);
+});
+
+void test('retries a rate-limited 429 instead of reporting it at once', async () => {
+  let calls = 0;
+  const unreachable = await findUnreachableUrls({
+    fetchImpl: async () => {
+      calls += 1;
+      return new Response(null, { status: calls === 1 ? 429 : 200 });
+    },
+    sleep: async () => {},
+    urls: ['a'],
+  });
+  assert.deepEqual(unreachable, []);
+  assert.equal(calls, 2);
+});
-Original file line number
+Diff line change
@@ @@ -0,0 +1,5 @@ @@
 +---
 +'@pymodel/pythinker-code': patch
 +---
++
 +Native `pythinker update` downloads the new binary from the GitHub release again; native installs on 2.2.0–2.4.1 need one reinstall to receive it (see #354).