diff --git a/apps/web/src/app/App.tsx b/apps/web/src/app/App.tsx
index 37c3a552..9fbe24d8 100644
--- a/apps/web/src/app/App.tsx
+++ b/apps/web/src/app/App.tsx
@@ -5,6 +5,7 @@ import { useTranslation } from "react-i18next";
 import { PwaUpdateNotice } from "@/components/PwaUpdateNotice";
 import { PwaInstallProvider } from "@/components/PwaInstallContext";
 import { PwaIosPrompt } from "@/components/PwaIosPrompt";
+import { DesktopUpdateNotice } from "@/components/DesktopUpdateNotice";
 import { Button } from "@/components/ui/button";
 import {
   api,
@@ -229,6 +230,7 @@ export const App = () => {
         <Route path="/ai-prompts" element={<AuthenticatedWorkspace />} />
         <Route path="*" element={<Navigate to="/" replace />} />
       </Routes>
+      <DesktopUpdateNotice />
       <PwaUpdateNotice />
       <PwaIosPrompt />
     </PwaInstallProvider>
diff --git a/apps/web/src/components/DesktopUpdateNotice.tsx b/apps/web/src/components/DesktopUpdateNotice.tsx
new file mode 100644
index 00000000..000428eb
--- /dev/null
+++ b/apps/web/src/components/DesktopUpdateNotice.tsx
@@ -0,0 +1,83 @@
+import { useState } from "react";
+import { useMutation, useQuery, useQueryClient } from "@tanstack/react-query";
+import { Download, LoaderCircle, RotateCcw, X } from "lucide-react";
+import { useTranslation } from "react-i18next";
+import { Button } from "@/components/ui/button";
+
+type DesktopUpdateState = "idle" | "available" | "downloaded";
+
+const UPDATE_STATUS_QUERY_KEY = ["desktop-update-status"] as const;
+
+export const DesktopUpdateNotice = () => {
+  const { t } = useTranslation();
+  const queryClient = useQueryClient();
+  const bridge = window.edgeeverDesktop;
+  const [dismissedState, setDismissedState] = useState<DesktopUpdateState | null>(null);
+
+  const statusQuery = useQuery({
+    queryKey: UPDATE_STATUS_QUERY_KEY,
+    queryFn: () => bridge!.updateStatus(),
+    enabled: bridge?.isAvailable === true,
+    refetchInterval: 5_000,
+    retry: 1,
+  });
+  const downloadMutation = useMutation({
+    mutationFn: () => bridge!.downloadUpdate(),
+    onSuccess: async () => {
+      await queryClient.invalidateQueries({ queryKey: UPDATE_STATUS_QUERY_KEY });
+    },
+  });
+  const installMutation = useMutation({
+    mutationFn: () => bridge!.installUpdate(),
+  });
+
+  const updateState = statusQuery.data?.state ?? "idle";
+  const visible = bridge?.isAvailable === true && updateState !== "idle" && dismissedState !== updateState;
+  if (!visible) return null;
+
+  const downloaded = updateState === "downloaded";
+  const downloading = downloadMutation.isPending;
+  const failed = downloadMutation.isError || installMutation.isError;
+
+  return (
+    <div
+      className="fixed bottom-5 right-5 z-[90] w-[min(22rem,calc(100vw-2rem))] animate-in slide-in-from-bottom-3 fade-in rounded-lg border border-emerald-200 bg-white/95 p-3 text-slate-900 shadow-[0_18px_48px_rgba(15,23,42,0.18)] backdrop-blur duration-300"
+      role="status"
+      aria-live="polite"
+    >
+      <div className="flex items-start gap-3">
+        <div className="mt-0.5 flex h-8 w-8 shrink-0 items-center justify-center rounded-full bg-emerald-50 text-emerald-700" aria-hidden="true">
+          {downloading ? <LoaderCircle className="h-4 w-4 animate-spin" /> : downloaded ? <RotateCcw className="h-4 w-4" /> : <Download className="h-4 w-4" />}
+        </div>
+        <div className="min-w-0 flex-1">
+          <div className="text-sm font-semibold leading-5">
+            {t(downloaded ? "systemInfo.desktopUpdateReadyTitle" : "systemInfo.desktopUpdateAvailableTitle")}
+          </div>
+          <div className="mt-0.5 text-xs leading-5 text-slate-500">
+            {t(downloaded ? "systemInfo.desktopUpdateReadyDescription" : "systemInfo.desktopUpdateAvailableDescription")}
+          </div>
+          {failed ? <div className="mt-1 text-xs font-medium text-rose-700" role="alert">{t("systemInfo.desktopUpdateFailed")}</div> : null}
+          <Button
+            className="mt-2"
+            size="sm"
+            variant="solid"
+            disabled={downloading || installMutation.isPending}
+            onClick={() => downloaded ? installMutation.mutate() : downloadMutation.mutate()}
+          >
+            {downloading
+              ? t("systemInfo.desktopUpdateDownloading")
+              : t(downloaded ? "systemInfo.desktopUpdateRestart" : "systemInfo.desktopUpdateDownload")}
+          </Button>
+        </div>
+        <button
+          className="flex h-7 w-7 shrink-0 items-center justify-center rounded-md text-slate-400 transition hover:bg-slate-100 hover:text-slate-700 focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-emerald-500/70"
+          type="button"
+          aria-label={t("common.close")}
+          onClick={() => setDismissedState(updateState)}
+        >
+          <X className="h-4 w-4" />
+        </button>
+      </div>
+    </div>
+  );
+};
diff --git a/packages/shared/src/i18n/en-US.ts b/packages/shared/src/i18n/en-US.ts
index beb19209..6194a5dc 100644
--- a/packages/shared/src/i18n/en-US.ts
+++ b/packages/shared/src/i18n/en-US.ts
@@ -608,6 +608,10 @@ export const enUS = {
     releaseNotesUnavailable: "This build does not include an update summary. You can view the full Release notes.",
     clientUpdatesNote: "Download desktop updates from <releases>Releases</releases>, or update mobile apps through the corresponding app store.",
     viewReleaseNotes: "Full notes",
+    desktopUpdateAvailableTitle: "Client update available",
+    desktopUpdateAvailableDescription: "A new version is ready to download and install.",
+    desktopUpdateReadyTitle: "Client update ready",
+    desktopUpdateReadyDescription: "Restart EdgeEver to finish updating.",
     desktopUpdateDownloading: "Downloading update…",
     desktopUpdateReady: "Update downloaded",
     desktopUpdateDownload: "Download update",
diff --git a/packages/shared/src/i18n/zh-CN.ts b/packages/shared/src/i18n/zh-CN.ts
index 7650428b..4d3fc1c6 100644
--- a/packages/shared/src/i18n/zh-CN.ts
+++ b/packages/shared/src/i18n/zh-CN.ts
@@ -608,6 +608,10 @@ export const zhCN = {
     releaseNotesUnavailable: "本次构建未包含更新摘要，可查看完整 Release 说明。",
     clientUpdatesNote: "桌面端可前往 <releases>Releases</releases> 下载更新，移动端请通过对应的应用商店更新。",
     viewReleaseNotes: "完整说明",
+    desktopUpdateAvailableTitle: "发现客户端新版本",
+    desktopUpdateAvailableDescription: "新版本已可下载并安装。",
+    desktopUpdateReadyTitle: "客户端更新已就绪",
+    desktopUpdateReadyDescription: "重启 EdgeEver 以完成更新。",
     desktopUpdateDownloading: "正在下载更新…",
     desktopUpdateReady: "更新已下载完成",
     desktopUpdateDownload: "下载更新",