diff --git a/apps/web/public/extensions/registry.json b/apps/web/public/extensions/registry.json
index 7dbc53b2..b340c4fe 100644
--- a/apps/web/public/extensions/registry.json
+++ b/apps/web/public/extensions/registry.json
@@ -1,6 +1,6 @@
 {
   "registryVersion": "1",
-  "updatedAt": "2026-09-08T16:21:56.000Z",
+  "updatedAt": "2026-09-08T16:40:19.000Z",
   "entries": [
     {
       "id": "org.edgeever.plugins.ai-rss",
@@ -15,10 +15,10 @@
         "repositoryUrl": "https://github.com/tianma-if/edgeever-ai-rss"
       },
       "verification": {
-        "version": "0.5.2",
+        "version": "0.5.3",
         "checksums": {
-          "manifestJson": "b8063f246730da33f9cee342670ca776c9319eb5a07585cb44f8641d49caa989",
-          "mainJs": "46bc00002a647f1f087ac2444e02192ec5ae2d1f04719e027de9386e8bf04934",
+          "manifestJson": "b164bf6ab199f0ef4282319dd87294a876ef3e7701962bae35a7b65c4e3c1156",
+          "mainJs": "7828d256ad758f85bd736742a72cac62ba46db6a2108c3a974bf9f429fcc3be4",
           "stylesCss": "05cd135a1fe70c3f38d34850a2e9abf6b0c0530b09477960036f567375b2082e"
         }
       }
diff --git a/apps/web/src/components/WorkspaceApp.tsx b/apps/web/src/components/WorkspaceApp.tsx
index c4dc2612..9231639e 100644
--- a/apps/web/src/components/WorkspaceApp.tsx
+++ b/apps/web/src/components/WorkspaceApp.tsx
@@ -100,7 +100,7 @@ import { useWorkspacePreferences } from "@/hooks/useWorkspacePreferences";
 import { useWorkspaceSelection } from "@/hooks/useWorkspaceSelection";
 import { useWorkspaceQueuedSync } from "@/hooks/useWorkspaceQueuedSync";
 import { EdgeEverPluginHost, type RegisteredPluginPanel } from "@/lib/plugins/plugin-host";
-import { loadPluginMarketplace } from "@/lib/plugins/plugin-marketplace";
+import { loadResolvedPluginMarketplace } from "@/lib/plugins/plugin-marketplace";
 import { updateOfficialMarketplacePlugins } from "@/lib/plugins/plugin-updates";
 import { createPublicNetworkAdapter } from "@/lib/plugins/public-network-adapter";
 import { clearRendererRecoveryRequired, isRendererRecoveryRequired } from "@/lib/renderer-recovery";
@@ -803,8 +803,12 @@ export const WorkspaceApp = ({
       if (!active || running) return;
       running = true;
       try {
-        const marketplace = await loadPluginMarketplace();
+        const marketplace = await loadResolvedPluginMarketplace();
         const result = await updateOfficialMarketplacePlugins(pluginHost, marketplace.entries);
+        const firstResolutionError = Object.entries(marketplace.resolutionErrors)[0];
+        if (firstResolutionError) {
+          console.error(`Official plugin ${firstResolutionError[0]} update resolution failed.`, firstResolutionError[1]);
+        }
         if (active && result.updated.length > 0) {
           setAppNoticeDialog({
             title: t("plugins.noticeTitle"),
diff --git a/apps/web/src/components/settings/PluginManagerCard.test.mjs b/apps/web/src/components/settings/PluginManagerCard.test.mjs
index 8c0f2f8a..528b3d08 100644
--- a/apps/web/src/components/settings/PluginManagerCard.test.mjs
+++ b/apps/web/src/components/settings/PluginManagerCard.test.mjs
@@ -16,4 +16,9 @@ describe("plugin manager card layout", () => {
     expect(source).toContain("href={entry.repositoryUrl}");
     expect(source).toContain("href={extension.source.repositoryUrl}");
   });
+
+  test("shows update checks when marketplace plugins exist without installed extensions", () => {
+    expect(source).toContain("snapshot.extensions.length > 0 || (marketplaceQuery.data?.entries.length ?? 0) > 0");
+    expect(source).not.toContain("{snapshot.extensions.length > 0 ? (\n              <Button");
+  });
 });
diff --git a/apps/web/src/components/settings/PluginManagerCard.tsx b/apps/web/src/components/settings/PluginManagerCard.tsx
index d162fafc..33bf63aa 100644
--- a/apps/web/src/components/settings/PluginManagerCard.tsx
+++ b/apps/web/src/components/settings/PluginManagerCard.tsx
@@ -9,7 +9,7 @@ import { Input } from "@/components/ui/input";
 import { Switch } from "@/components/ui/switch";
 import type { EdgeEverPluginHost, InstalledExtension, RegisteredPluginCommand, RegisteredPluginPanel } from "@/lib/plugins/plugin-host";
 import { PluginPanelDialog } from "@/components/plugins/PluginPanelDialog";
-import { loadPluginMarketplace } from "@/lib/plugins/plugin-marketplace";
+import { loadResolvedPluginMarketplace } from "@/lib/plugins/plugin-marketplace";
 import { GitHubMark, GitHubRepositoryLink } from "@/components/GitHubRepositoryLink";
 import { applyPluginUpdate, checkPluginUpdates, type PluginUpdateInfo } from "@/lib/plugins/plugin-updates";
 import { PluginUpdateDialog } from "@/components/plugins/PluginUpdateDialog";
@@ -310,7 +310,7 @@ export const PluginManagerCard = ({
   const [activePanel, setActivePanel] = useState<RegisteredPluginPanel | null>(null);
   const [pendingUpdate, setPendingUpdate] = useState<PluginUpdateInfo | null>(null);
   const [pendingTrustPluginId, setPendingTrustPluginId] = useState<string | null>(null);
-  const marketplaceQuery = useQuery({ queryKey: ["plugin-marketplace", "v1"], queryFn: () => loadPluginMarketplace(), staleTime: 5 * 60_000 });
+  const marketplaceQuery = useQuery({ queryKey: ["plugin-marketplace", "v1"], queryFn: () => loadResolvedPluginMarketplace(), staleTime: 5 * 60_000 });
   const extensionVersionKey = snapshot.extensions
     .map((extension) => `${extension.manifest.id}:${extension.manifest.version}:${extension.source.kind}`)
     .join("|");
@@ -374,8 +374,11 @@ export const PluginManagerCard = ({
         ["plugin-updates", extensionVersionKey, refreshedMarketplace.data?.updatedAt ?? "unavailable"],
         result,
       );
-      setLastManualCheckCount(result.updates.length);
-      const firstCheckError = Object.values(result.errors)[0];
+      const firstCheckError = Object.values({
+        ...(refreshedMarketplace.data?.resolutionErrors ?? {}),
+        ...result.errors,
+      })[0];
+      setLastManualCheckCount(firstCheckError ? null : result.updates.length);
       if (firstCheckError) setError(t("plugins.updates.checkFailed", { message: firstCheckError }));
     } catch (checkError) {
       setError(checkError instanceof Error ? checkError.message : String(checkError));
@@ -423,7 +426,7 @@ export const PluginManagerCard = ({
             </span>
           </CardTitle>
           <div className="flex items-center gap-1">
-            {snapshot.extensions.length > 0 ? (
+            {snapshot.extensions.length > 0 || (marketplaceQuery.data?.entries.length ?? 0) > 0 ? (
               <Button
                 variant="ghost"
                 size="sm"
diff --git a/apps/web/src/lib/plugins/github-plugin-distribution.ts b/apps/web/src/lib/plugins/github-plugin-distribution.ts
index e222d311..7f9d4a0a 100644
--- a/apps/web/src/lib/plugins/github-plugin-distribution.ts
+++ b/apps/web/src/lib/plugins/github-plugin-distribution.ts
@@ -90,7 +90,7 @@ const requireAsset = (release: GithubReleaseResponse, name: string) => {
   return asset;
 };
 
-type GithubAssetDownloader = (
+export type GithubAssetDownloader = (
   coordinates: GithubRepositoryCoordinates,
   releaseTag: string,
   asset: GithubReleaseAsset,
diff --git a/apps/web/src/lib/plugins/plugin-marketplace.test.mjs b/apps/web/src/lib/plugins/plugin-marketplace.test.mjs
index 1b3d1715..e75a63ba 100644
--- a/apps/web/src/lib/plugins/plugin-marketplace.test.mjs
+++ b/apps/web/src/lib/plugins/plugin-marketplace.test.mjs
@@ -1,6 +1,7 @@
 import { describe, expect, test } from "bun:test";
 import { parseMarketplaceRegistry } from "@edgeever/plugin-api";
 import { sha256Hex } from "./github-plugin-distribution.ts";
+import { resolveOfficialPluginMarketplace } from "./plugin-marketplace.ts";
 
 describe("bundled plugin marketplace", () => {
   test("keeps verified checksums aligned with bundled extension files", async () => {
@@ -29,13 +30,100 @@ describe("bundled plugin marketplace", () => {
       repositoryUrl: "https://github.com/tianma-if/edgeever-ai-rss",
       distribution: { type: "github", repositoryUrl: "https://github.com/tianma-if/edgeever-ai-rss" },
       verification: {
-        version: "0.5.2",
+        version: "0.5.3",
         checksums: {
-          manifestJson: "b8063f246730da33f9cee342670ca776c9319eb5a07585cb44f8641d49caa989",
-          mainJs: "46bc00002a647f1f087ac2444e02192ec5ae2d1f04719e027de9386e8bf04934",
+          manifestJson: "b164bf6ab199f0ef4282319dd87294a876ef3e7701962bae35a7b65c4e3c1156",
+          mainJs: "7828d256ad758f85bd736742a72cac62ba46db6a2108c3a974bf9f429fcc3be4",
           stylesCss: "05cd135a1fe70c3f38d34850a2e9abf6b0c0530b09477960036f567375b2082e",
         },
       },
     });
   });
+
+  test("resolves a newer official GitHub release with verified asset checksums", async () => {
+    const registry = parseMarketplaceRegistry({
+      registryVersion: "1",
+      updatedAt: "2026-09-08T00:00:00.000Z",
+      entries: [{
+        id: "org.edgeever.plugins.ai-rss",
+        name: "EdgeEver AI RSS",
+        description: "RSS",
+        author: "EdgeEver",
+        publisher: "edgeever",
+        category: "News & AI",
+        repositoryUrl: "https://github.com/tianma-if/edgeever-ai-rss",
+        distribution: { type: "github", repositoryUrl: "https://github.com/tianma-if/edgeever-ai-rss" },
+        verification: { version: "0.5.2", checksums: { manifestJson: "a".repeat(64), mainJs: "b".repeat(64) } },
+      }],
+    });
+    const manifest = {
+      type: "plugin",
+      id: "org.edgeever.plugins.ai-rss",
+      name: "EdgeEver AI RSS",
+      version: "0.5.3",
+      apiVersion: "2",
+      settingsUi: "host",
+      entry: "./main.js",
+      permissions: ["ui:notices"],
+    };
+    const manifestText = JSON.stringify(manifest);
+    const assets = {
+      "manifest.json": new TextEncoder().encode(manifestText).buffer,
+      "main.js": new TextEncoder().encode("export default {};").buffer,
+    };
+    const request = async (input) => {
+      const url = String(input);
+      if (url.includes("/contents/manifest.json")) return new Response(manifestText);
+      if (url.includes("/releases/tags/")) return Response.json({
+        tag_name: "v0.5.3",
+        draft: false,
+        assets: Object.entries(assets).map(([name, buffer], index) => ({
+          id: index + 1,
+          name,
+          size: buffer.byteLength,
+          url: `https://api.github.test/assets/${index + 1}`,
+          browser_download_url: `https://github.test/v0.5.3/${name}`,
+        })),
+      });
+      throw new Error(`Unexpected request: ${url}`);
+    };
+    const download = async (_coordinates, _releaseTag, asset) => assets[asset.name];
+
+    const resolved = await resolveOfficialPluginMarketplace(registry, request, download);
+
+    expect(resolved.resolutionErrors).toEqual({});
+    expect(resolved.entries[0].verification).toEqual({
+      version: "0.5.3",
+      checksums: {
+        manifestJson: await sha256Hex(assets["manifest.json"]),
+        mainJs: await sha256Hex(assets["main.js"]),
+      },
+    });
+  });
+
+  test("keeps the pinned release and reports an error when live resolution fails", async () => {
+    const registry = parseMarketplaceRegistry({
+      registryVersion: "1",
+      updatedAt: "2026-09-08T00:00:00.000Z",
+      entries: [{
+        id: "org.edgeever.plugins.ai-rss",
+        name: "EdgeEver AI RSS",
+        description: "RSS",
+        author: "EdgeEver",
+        publisher: "edgeever",
+        category: "News & AI",
+        repositoryUrl: "https://github.com/tianma-if/edgeever-ai-rss",
+        distribution: { type: "github", repositoryUrl: "https://github.com/tianma-if/edgeever-ai-rss" },
+        verification: { version: "0.5.3", checksums: { manifestJson: "a".repeat(64), mainJs: "b".repeat(64) } },
+      }],
+    });
+
+    const resolved = await resolveOfficialPluginMarketplace(
+      registry,
+      async () => new Response(null, { status: 503 }),
+    );
+
+    expect(resolved.entries[0]).toEqual(registry.entries[0]);
+    expect(resolved.resolutionErrors[registry.entries[0].id]).toContain("503");
+  });
 });
diff --git a/apps/web/src/lib/plugins/plugin-marketplace.ts b/apps/web/src/lib/plugins/plugin-marketplace.ts
index c1fca65e..c44e1fbc 100644
--- a/apps/web/src/lib/plugins/plugin-marketplace.ts
+++ b/apps/web/src/lib/plugins/plugin-marketplace.ts
@@ -1,4 +1,9 @@
-import { parseMarketplaceRegistry, type MarketplaceRegistry } from "@edgeever/plugin-api";
+import { parseMarketplaceRegistry, type MarketplaceEntry, type MarketplaceRegistry } from "@edgeever/plugin-api";
+import {
+  downloadGithubExtension,
+  type GithubAssetDownloader,
+} from "@/lib/plugins/github-plugin-distribution";
+import { isVersionOutdated } from "@/lib/version-check";
 
 export const DEFAULT_PLUGIN_REGISTRY_URL = "/extensions/registry.json";
 
@@ -11,3 +16,62 @@ export const loadPluginMarketplace = async (
   if (!response.ok) throw new Error(`Plugin marketplace request failed with HTTP ${response.status}.`);
   return parseMarketplaceRegistry(await response.json());
 };
+
+export interface ResolvedPluginMarketplace extends MarketplaceRegistry {
+  resolutionErrors: Record<string, string>;
+}
+
+const resolveOfficialGithubEntry = async (
+  entry: MarketplaceEntry,
+  request: typeof fetch,
+  downloadAssetBytes?: GithubAssetDownloader,
+): Promise<MarketplaceEntry> => {
+  if (entry.publisher !== "edgeever" || entry.distribution.type !== "github") return entry;
+  const downloaded = await downloadGithubExtension(entry.distribution.repositoryUrl, request, downloadAssetBytes);
+  if (downloaded.manifest.id !== entry.id) {
+    throw new Error("Official repository manifest id does not match the marketplace entry.");
+  }
+  if (isVersionOutdated(downloaded.manifest.version, entry.verification.version)) {
+    throw new Error("Official repository version is older than the marketplace verified version.");
+  }
+  if (!downloaded.checksums.manifestJson) throw new Error("Official extension release is missing a manifest checksum.");
+  if (downloaded.manifest.type === "plugin" && !downloaded.checksums.mainJs) {
+    throw new Error("Official plugin release is missing a main.js checksum.");
+  }
+  return {
+    ...entry,
+    verification: {
+      version: downloaded.manifest.version,
+      checksums: downloaded.checksums,
+    },
+  };
+};
+
+export const resolveOfficialPluginMarketplace = async (
+  registry: MarketplaceRegistry,
+  request: typeof fetch = window.fetch.bind(window),
+  downloadAssetBytes?: GithubAssetDownloader,
+): Promise<ResolvedPluginMarketplace> => {
+  const settled = await Promise.allSettled(
+    registry.entries.map((entry) => resolveOfficialGithubEntry(entry, request, downloadAssetBytes)),
+  );
+  const resolutionErrors: Record<string, string> = {};
+  const entries = settled.map((result, index) => {
+    if (result.status === "fulfilled") return result.value;
+    const entry = registry.entries[index];
+    if (!entry) throw result.reason;
+    resolutionErrors[entry.id] = result.reason instanceof Error ? result.reason.message : String(result.reason);
+    return entry;
+  });
+  return { ...registry, entries, resolutionErrors };
+};
+
+export const loadResolvedPluginMarketplace = async (
+  registryUrl = DEFAULT_PLUGIN_REGISTRY_URL,
+  request: typeof fetch = window.fetch.bind(window),
+  downloadAssetBytes?: GithubAssetDownloader,
+) => resolveOfficialPluginMarketplace(
+  await loadPluginMarketplace(registryUrl, request),
+  request,
+  downloadAssetBytes,
+);