diff --git a/.github/workflows/release-tauri.yml b/.github/workflows/release-tauri.yml
index 28558a86..3db6d1d2 100644
--- a/.github/workflows/release-tauri.yml
+++ b/.github/workflows/release-tauri.yml
@@ -30,11 +30,20 @@ jobs:
         include:
           - platform: macos-latest
             rust-target: aarch64-apple-darwin
+            updater-target: darwin
+            updater-arch: aarch64
           - platform: windows-latest
             rust-target: x86_64-pc-windows-msvc
+            updater-target: windows
+            updater-arch: x86_64
           - platform: ubuntu-22.04
             rust-target: x86_64-unknown-linux-gnu
+            updater-target: linux
+            updater-arch: x86_64
     runs-on: ${{ matrix.platform }}
+    env:
+      TAURI_SIGNING_PRIVATE_KEY: ${{ secrets.TAURI_SIGNING_PRIVATE_KEY }}
+      TAURI_SIGNING_PRIVATE_KEY_PASSWORD: ${{ secrets.TAURI_SIGNING_PRIVATE_KEY_PASSWORD }}
     steps:
       - uses: actions/checkout@v4
 
@@ -76,6 +85,17 @@ jobs:
         working-directory: 'openless-all/app'
         run: npm ci
 
+      - name: Check updater signing availability
+        if: startsWith(github.ref, 'refs/tags/v') && endsWith(github.ref, '-tauri')
+        shell: bash
+        env:
+          TAURI_SIGNING_PRIVATE_KEY: ${{ secrets.TAURI_SIGNING_PRIVATE_KEY }}
+        run: |
+          if [ -z "${TAURI_SIGNING_PRIVATE_KEY:-}" ]; then
+            echo "::error::TAURI_SIGNING_PRIVATE_KEY is required for signed auto-update artifacts."
+            exit 1
+          fi
+
       - name: Check Apple signing availability
         if: matrix.platform == 'macos-latest' && startsWith(github.ref, 'refs/tags/v') && endsWith(github.ref, '-tauri')
         shell: bash
@@ -159,19 +179,50 @@ jobs:
         working-directory: 'openless-all/app'
         env:
           INSTALL: '0'        # CI 不要装到 /Applications,也不要 reset TCC
+          TAURI_SIGNING_PRIVATE_KEY: ${{ secrets.TAURI_SIGNING_PRIVATE_KEY }}
+          TAURI_SIGNING_PRIVATE_KEY_PASSWORD: ${{ secrets.TAURI_SIGNING_PRIVATE_KEY_PASSWORD }}
         run: bash scripts/build-mac.sh
 
       # ── Windows：仅 Windows 跑通用 tauri build（Linux 用下方专用 step，避免重复构建）──
       - name: Build (Windows)
         if: matrix.platform == 'windows-latest'
+        shell: bash
         working-directory: 'openless-all/app'
-        run: npm run tauri build
+        env:
+          TAURI_SIGNING_PRIVATE_KEY: ${{ secrets.TAURI_SIGNING_PRIVATE_KEY }}
+          TAURI_SIGNING_PRIVATE_KEY_PASSWORD: ${{ secrets.TAURI_SIGNING_PRIVATE_KEY_PASSWORD }}
+        run: |
+          if [ -n "${TAURI_SIGNING_PRIVATE_KEY:-}" ]; then
+            npm run tauri -- build --config '{"bundle":{"createUpdaterArtifacts":true}}'
+          else
+            npm run tauri build
+          fi
 
       # ── Linux：产 deb / rpm / AppImage ──
       - name: Build (Linux)
         if: matrix.platform == 'ubuntu-22.04'
+        shell: bash
+        working-directory: 'openless-all/app'
+        env:
+          TAURI_SIGNING_PRIVATE_KEY: ${{ secrets.TAURI_SIGNING_PRIVATE_KEY }}
+          TAURI_SIGNING_PRIVATE_KEY_PASSWORD: ${{ secrets.TAURI_SIGNING_PRIVATE_KEY_PASSWORD }}
+        run: |
+          if [ -n "${TAURI_SIGNING_PRIVATE_KEY:-}" ]; then
+            npm run tauri -- build --bundles deb,rpm,appimage --config '{"bundle":{"createUpdaterArtifacts":true}}'
+          else
+            npm run tauri -- build --bundles deb,rpm,appimage
+          fi
+
+      - name: Write updater manifest
+        if: env.TAURI_SIGNING_PRIVATE_KEY != ''
+        shell: bash
         working-directory: 'openless-all/app'
-        run: npm run tauri -- build --bundles deb,rpm,appimage
+        env:
+          TAURI_SIGNING_PRIVATE_KEY: ${{ secrets.TAURI_SIGNING_PRIVATE_KEY }}
+          OPENLESS_UPDATE_TARGET: ${{ matrix.updater-target }}
+          OPENLESS_UPDATE_ARCH: ${{ matrix.updater-arch }}
+          OPENLESS_UPDATE_REPO: appergb/openless
+        run: node scripts/write-updater-manifest.mjs
 
       # ── 收集产物 ──
       - name: List artifacts (debug)
@@ -206,6 +257,17 @@ jobs:
             openless-all/app/src-tauri/target/release/bundle/dmg/*.dmg
           if-no-files-found: error
 
+      - name: Upload macOS updater artifacts
+        if: matrix.platform == 'macos-latest' && env.TAURI_SIGNING_PRIVATE_KEY != ''
+        uses: actions/upload-artifact@v4
+        with:
+          name: openless-macos-arm64-updater
+          path: |
+            openless-all/app/src-tauri/target/release/bundle/macos/*.app.tar.gz
+            openless-all/app/src-tauri/target/release/bundle/macos/*.app.tar.gz.sig
+            openless-all/app/src-tauri/target/release/bundle/latest-darwin-aarch64.json
+          if-no-files-found: error
+
       - name: Upload Windows artifacts
         if: matrix.platform == 'windows-latest'
         uses: actions/upload-artifact@v4
@@ -216,6 +278,17 @@ jobs:
             openless-all/app/src-tauri/target/release/bundle/msi/*.msi
           if-no-files-found: error
 
+      - name: Upload Windows updater artifacts
+        if: matrix.platform == 'windows-latest' && env.TAURI_SIGNING_PRIVATE_KEY != ''
+        uses: actions/upload-artifact@v4
+        with:
+          name: openless-windows-x64-updater
+          path: |
+            openless-all/app/src-tauri/target/release/bundle/nsis/*.exe.sig
+            openless-all/app/src-tauri/target/release/bundle/msi/*.msi.sig
+            openless-all/app/src-tauri/target/release/bundle/latest-windows-x86_64.json
+          if-no-files-found: error
+
       - name: Upload Linux artifacts
         if: matrix.platform == 'ubuntu-22.04'
         uses: actions/upload-artifact@v4
@@ -227,6 +300,16 @@ jobs:
             openless-all/app/src-tauri/target/release/bundle/appimage/*.AppImage
           if-no-files-found: error
 
+      - name: Upload Linux updater artifacts
+        if: matrix.platform == 'ubuntu-22.04' && env.TAURI_SIGNING_PRIVATE_KEY != ''
+        uses: actions/upload-artifact@v4
+        with:
+          name: openless-linux-x64-updater
+          path: |
+            openless-all/app/src-tauri/target/release/bundle/appimage/*.AppImage.sig
+            openless-all/app/src-tauri/target/release/bundle/latest-linux-x86_64.json
+          if-no-files-found: error
+
       # ── tag 推送时,同步上传到 GitHub Release ──
       - name: Create / update release
         if: startsWith(github.ref, 'refs/tags/v') && endsWith(github.ref, '-tauri')
@@ -239,8 +322,14 @@ jobs:
           generate_release_notes: true
           files: |
             openless-all/app/src-tauri/target/release/bundle/dmg/*.dmg
+            openless-all/app/src-tauri/target/release/bundle/macos/*.app.tar.gz
+            openless-all/app/src-tauri/target/release/bundle/macos/*.app.tar.gz.sig
             openless-all/app/src-tauri/target/release/bundle/nsis/*.exe
+            openless-all/app/src-tauri/target/release/bundle/nsis/*.exe.sig
             openless-all/app/src-tauri/target/release/bundle/msi/*.msi
+            openless-all/app/src-tauri/target/release/bundle/msi/*.msi.sig
             openless-all/app/src-tauri/target/release/bundle/deb/*.deb
             openless-all/app/src-tauri/target/release/bundle/rpm/*.rpm
             openless-all/app/src-tauri/target/release/bundle/appimage/*.AppImage
+            openless-all/app/src-tauri/target/release/bundle/appimage/*.AppImage.sig
+            openless-all/app/src-tauri/target/release/bundle/latest-*.json
diff --git a/openless-all/app/package-lock.json b/openless-all/app/package-lock.json
index d0164033..14f3ac57 100644
--- a/openless-all/app/package-lock.json
+++ b/openless-all/app/package-lock.json
@@ -1,15 +1,16 @@
 {
   "name": "openless-app",
-  "version": "1.1.4",
+  "version": "1.2.2",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "openless-app",
-      "version": "1.1.4",
+      "version": "1.2.2",
       "dependencies": {
         "@tauri-apps/api": "^2.1.1",
         "@tauri-apps/plugin-shell": "^2.0.1",
+        "@tauri-apps/plugin-updater": "^2.10.1",
         "i18next": "^26.0.8",
         "react": "^18.3.1",
         "react-dom": "^18.3.1",
@@ -1349,6 +1350,15 @@
         "@tauri-apps/api": "^2.10.1"
       }
     },
+    "node_modules/@tauri-apps/plugin-updater": {
+      "version": "2.10.1",
+      "resolved": "https://registry.npmjs.org/@tauri-apps/plugin-updater/-/plugin-updater-2.10.1.tgz",
+      "integrity": "sha512-NFYMg+tWOZPJdzE/PpFj2qfqwAWwNS3kXrb1tm1gnBJ9mYzZ4WDRrwy8udzWoAnfGCHLuePNLY1WVCNHnh3eRA==",
+      "license": "MIT OR Apache-2.0",
+      "dependencies": {
+        "@tauri-apps/api": "^2.10.1"
+      }
+    },
     "node_modules/@types/babel__core": {
       "version": "7.20.5",
       "resolved": "https://registry.npmjs.org/@types/babel__core/-/babel__core-7.20.5.tgz",
diff --git a/openless-all/app/package.json b/openless-all/app/package.json
index a0f60200..6bdf51ec 100644
--- a/openless-all/app/package.json
+++ b/openless-all/app/package.json
@@ -13,6 +13,7 @@
   "dependencies": {
     "@tauri-apps/api": "^2.1.1",
     "@tauri-apps/plugin-shell": "^2.0.1",
+    "@tauri-apps/plugin-updater": "^2.10.1",
     "i18next": "^26.0.8",
     "react": "^18.3.1",
     "react-dom": "^18.3.1",
diff --git a/openless-all/app/scripts/build-mac.sh b/openless-all/app/scripts/build-mac.sh
index 454fb049..63b7c94e 100755
--- a/openless-all/app/scripts/build-mac.sh
+++ b/openless-all/app/scripts/build-mac.sh
@@ -25,7 +25,11 @@ else
 fi
 
 echo "▶ tauri build"
-npm run tauri build
+TAURI_BUILD_ARGS=(build)
+if [ -n "${TAURI_SIGNING_PRIVATE_KEY:-}" ] || [ -n "${TAURI_SIGNING_PRIVATE_KEY_PATH:-}" ]; then
+  TAURI_BUILD_ARGS+=(--config '{"bundle":{"createUpdaterArtifacts":true}}')
+fi
+npm run tauri -- "${TAURI_BUILD_ARGS[@]}"
 
 echo "▶ 校验 Info.plist / 签名"
 /usr/libexec/PlistBuddy -c "Print :NSMicrophoneUsageDescription" "$INFO" >/dev/null
diff --git a/openless-all/app/scripts/write-updater-manifest.mjs b/openless-all/app/scripts/write-updater-manifest.mjs
new file mode 100755
index 00000000..4b4e8a40
--- /dev/null
+++ b/openless-all/app/scripts/write-updater-manifest.mjs
@@ -0,0 +1,63 @@
+#!/usr/bin/env node
+import { existsSync, readFileSync, readdirSync, writeFileSync } from 'node:fs';
+import { basename, join } from 'node:path';
+import process from 'node:process';
+import { fileURLToPath } from 'node:url';
+
+const target = process.env.OPENLESS_UPDATE_TARGET;
+const arch = process.env.OPENLESS_UPDATE_ARCH;
+const repo = process.env.OPENLESS_UPDATE_REPO || 'appergb/openless';
+
+if (!target || !arch) {
+  throw new Error('OPENLESS_UPDATE_TARGET and OPENLESS_UPDATE_ARCH are required');
+}
+
+const packageJson = JSON.parse(readFileSync(new URL('../package.json', import.meta.url), 'utf8'));
+const bundleDir = fileURLToPath(new URL('../src-tauri/target/release/bundle/', import.meta.url));
+
+const candidatesByTarget = {
+  darwin: ['macos/OpenLess.app.tar.gz'],
+  windows: ['nsis/OpenLess_*_x64-setup.exe', 'nsis/OpenLess*_x64-setup.exe'],
+  linux: ['appimage/OpenLess_*.AppImage', 'appimage/OpenLess*.AppImage'],
+};
+
+function findFirst(patterns) {
+  for (const pattern of patterns) {
+    if (!pattern.includes('*')) {
+      const path = join(bundleDir, pattern);
+      if (existsSync(path)) return path;
+      continue;
+    }
+    const [dir, namePattern] = pattern.split('/');
+    const dirPath = join(bundleDir, dir);
+    if (!existsSync(dirPath)) continue;
+    const prefix = namePattern.split('*')[0];
+    const suffix = namePattern.split('*').at(-1);
+    const match = readdirSync(dirPath)
+      .filter(name => name.startsWith(prefix) && name.endsWith(suffix))
+      .sort()[0];
+    if (match) return join(dirPath, match);
+  }
+}
+
+const artifact = findFirst(candidatesByTarget[target] || []);
+if (!artifact) {
+  throw new Error(`No updater artifact found for ${target} in ${bundleDir}`);
+}
+
+const signaturePath = `${artifact}.sig`;
+if (!existsSync(signaturePath)) {
+  throw new Error(`Missing updater signature: ${signaturePath}`);
+}
+
+const assetName = basename(artifact);
+const manifestName = `latest-${target}-${arch}.json`;
+const manifest = {
+  version: packageJson.version,
+  pub_date: new Date().toISOString(),
+  url: `https://github.com/${repo}/releases/latest/download/${assetName}`,
+  signature: readFileSync(signaturePath, 'utf8').trim(),
+};
+
+writeFileSync(join(bundleDir, manifestName), `${JSON.stringify(manifest, null, 2)}\n`);
+console.log(`Wrote ${manifestName} for ${assetName}`);
diff --git a/openless-all/app/src-tauri/Cargo.lock b/openless-all/app/src-tauri/Cargo.lock
index ca7dcf74..321e00d9 100644
--- a/openless-all/app/src-tauri/Cargo.lock
+++ b/openless-all/app/src-tauri/Cargo.lock
@@ -119,6 +119,15 @@ version = "1.0.102"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "7f202df86484c868dbad7eaa557ef785d5c66295e41b460ef922eca0723b842c"
 
+[[package]]
+name = "arbitrary"
+version = "1.4.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c3d036a3c4ab069c7b410a2ce876bd74808d2d0888a82667669f8e783a898bf1"
+dependencies = [
+ "derive_arbitrary",
+]
+
 [[package]]
 name = "arboard"
 version = "3.6.1"
@@ -858,7 +867,7 @@ dependencies = [
  "core-foundation-sys 0.8.7",
  "coreaudio-rs",
  "dasp_sample",
- "jni",
+ "jni 0.21.1",
  "js-sys",
  "libc",
  "mach2",
@@ -1026,6 +1035,17 @@ dependencies = [
  "serde_core",
 ]
 
+[[package]]
+name = "derive_arbitrary"
+version = "1.4.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1e567bd82dcff979e4b03460c307b3cdc9e96fde3d73bed1496d2bc75d9dd62a"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn 2.0.117",
+]
+
 [[package]]
 name = "derive_more"
 version = "0.99.20"
@@ -1375,6 +1395,17 @@ dependencies = [
  "rustc_version",
 ]
 
+[[package]]
+name = "filetime"
+version = "0.2.27"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f98844151eee8917efc50bd9e8318cb963ae8b297431495d3f758616ea5c57db"
+dependencies = [
+ "cfg-if",
+ "libc",
+ "libredox",
+]
+
 [[package]]
 name = "find-msvc-tools"
 version = "0.1.9"
@@ -2397,6 +2428,36 @@ dependencies = [
  "windows-sys 0.45.0",
 ]
 
+[[package]]
+name = "jni"
+version = "0.22.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5efd9a482cf3a427f00d6b35f14332adc7902ce91efb778580e180ff90fa3498"
+dependencies = [
+ "cfg-if",
+ "combine",
+ "jni-macros",
+ "jni-sys 0.4.1",
+ "log",
+ "simd_cesu8",
+ "thiserror 2.0.18",
+ "walkdir",
+ "windows-link 0.2.1",
+]
+
+[[package]]
+name = "jni-macros"
+version = "0.22.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a00109accc170f0bdb141fed3e393c565b6f5e072365c3bd58f5b062591560a3"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "rustc_version",
+ "simd_cesu8",
+ "syn 2.0.117",
+]
+
 [[package]]
 name = "jni-sys"
 version = "0.3.1"
@@ -2560,7 +2621,10 @@ version = "0.1.16"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "e02f3bb43d335493c96bf3fd3a321600bf6bd07ed34bc64118e9293bdffea46c"
 dependencies = [
+ "bitflags 2.11.1",
  "libc",
+ "plain",
+ "redox_syscall 0.7.4",
 ]
 
 [[package]]
@@ -2708,6 +2772,12 @@ version = "0.2.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "68354c5c6bd36d73ff3feceb05efa59b6acb7626617f4962be322a825e61f79a"
 
+[[package]]
+name = "minisign-verify"
+version = "0.2.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "22f9645cb765ea72b8111f36c522475d2daa0d22c957a9826437e97534bc4e9e"
+
 [[package]]
 name = "miniz_oxide"
 version = "0.8.9"
@@ -3040,6 +3110,7 @@ checksum = "e3e0adef53c21f888deb4fa59fc59f7eb17404926ee8a6f59f5df0fd7f9f3272"
 dependencies = [
  "bitflags 2.11.1",
  "block2 0.6.2",
+ "libc",
  "objc2 0.6.4",
  "objc2-core-foundation",
 ]
@@ -3067,6 +3138,18 @@ dependencies = [
  "objc2-foundation 0.2.2",
 ]
 
+[[package]]
+name = "objc2-osa-kit"
+version = "0.3.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f112d1746737b0da274ef79a23aac283376f335f4095a083a267a082f21db0c0"
+dependencies = [
+ "bitflags 2.11.1",
+ "objc2 0.6.4",
+ "objc2-app-kit 0.3.2",
+ "objc2-foundation 0.3.2",
+]
+
 [[package]]
 name = "objc2-quartz-core"
 version = "0.2.2"
@@ -3124,7 +3207,7 @@ version = "0.6.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "e8b61bebd49e5d43f5f8cc7ee2891c16e0f41ec7954d36bcb6c14c5e0de867fb"
 dependencies = [
- "jni",
+ "jni 0.21.1",
  "ndk 0.8.0",
  "ndk-context",
  "num-derive",
@@ -3196,6 +3279,7 @@ dependencies = [
  "tauri-build",
  "tauri-plugin-shell",
  "tauri-plugin-single-instance",
+ "tauri-plugin-updater",
  "thiserror 1.0.69",
  "tokio",
  "tokio-tungstenite",
@@ -3237,6 +3321,20 @@ dependencies = [
  "windows-sys 0.61.2",
 ]
 
+[[package]]
+name = "osakit"
+version = "0.3.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "732c71caeaa72c065bb69d7ea08717bd3f4863a4f451402fc9513e29dbd5261b"
+dependencies = [
+ "objc2 0.6.4",
+ "objc2-foundation 0.3.2",
+ "objc2-osa-kit",
+ "serde",
+ "serde_json",
+ "thiserror 2.0.18",
+]
+
 [[package]]
 name = "pango"
 version = "0.18.3"
@@ -3286,7 +3384,7 @@ checksum = "2621685985a2ebf1c516881c026032ac7deafcda1a2c9b7850dc81e3dfcb64c1"
 dependencies = [
  "cfg-if",
  "libc",
- "redox_syscall",
+ "redox_syscall 0.5.18",
  "smallvec",
  "windows-link 0.2.1",
 ]
@@ -3513,6 +3611,12 @@ version = "0.3.33"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "19f132c84eca552bf34cab8ec81f1c1dcc229b811638f9d283dceabe58c5569e"
 
+[[package]]
+name = "plain"
+version = "0.2.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b4596b6d070b27117e987119b4dac604f3c58cfb0b191112e24771b2faeac1a6"
+
 [[package]]
 name = "plist"
 version = "1.9.0"
@@ -3927,6 +4031,15 @@ dependencies = [
  "bitflags 2.11.1",
 ]
 
+[[package]]
+name = "redox_syscall"
+version = "0.7.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f450ad9c3b1da563fb6948a8e0fb0fb9269711c9c73d9ea1de5058c79c8d643a"
+dependencies = [
+ "bitflags 2.11.1",
+]
+
 [[package]]
 name = "redox_users"
 version = "0.5.2"
@@ -4041,15 +4154,20 @@ dependencies = [
  "http-body",
  "http-body-util",
  "hyper",
+ "hyper-rustls",
  "hyper-util",
  "js-sys",
  "log",
  "percent-encoding",
  "pin-project-lite",
+ "rustls",
+ "rustls-pki-types",
+ "rustls-platform-verifier",
  "serde",
  "serde_json",
  "sync_wrapper",
  "tokio",
+ "tokio-rustls",
  "tokio-util",
  "tower",
  "tower-http",
@@ -4139,6 +4257,33 @@ dependencies = [
  "zeroize",
 ]
 
+[[package]]
+name = "rustls-platform-verifier"
+version = "0.7.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "26d1e2536ce4f35f4846aa13bff16bd0ff40157cdb14cc056c7b14ba41233ba0"
+dependencies = [
+ "core-foundation 0.10.1",
+ "core-foundation-sys 0.8.7",
+ "jni 0.22.4",
+ "log",
+ "once_cell",
+ "rustls",
+ "rustls-native-certs",
+ "rustls-platform-verifier-android",
+ "rustls-webpki",
+ "security-framework",
+ "security-framework-sys",
+ "webpki-root-certs",
+ "windows-sys 0.61.2",
+]
+
+[[package]]
+name = "rustls-platform-verifier-android"
+version = "0.1.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f87165f0995f63a9fbeea62b64d10b4d9d8e78ec6d7d51fb2125fda7bb36788f"
+
 [[package]]
 name = "rustls-webpki"
 version = "0.103.13"
@@ -4562,6 +4707,22 @@ version = "0.3.9"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "703d5c7ef118737c72f1af64ad2f6f8c5e1921f818cdcb97b8fe6fc69bf66214"
 
+[[package]]
+name = "simd_cesu8"
+version = "1.1.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "94f90157bb87cddf702797c5dadfa0be7d266cdf49e22da2fcaa32eff75b2c33"
+dependencies = [
+ "rustc_version",
+ "simdutf8",
+]
+
+[[package]]
+name = "simdutf8"
+version = "0.1.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e3a9fe34e3e7a50316060351f37187a3f546bce95496156754b601a5fa71b76e"
+
 [[package]]
 name = "simplelog"
 version = "0.12.2"
@@ -4622,7 +4783,7 @@ dependencies = [
  "objc2-foundation 0.3.2",
  "objc2-quartz-core 0.3.2",
  "raw-window-handle",
- "redox_syscall",
+ "redox_syscall 0.5.18",
  "tracing",
  "wasm-bindgen",
  "web-sys",
@@ -4805,7 +4966,7 @@ dependencies = [
  "gdkwayland-sys",
  "gdkx11-sys",
  "gtk",
- "jni",
+ "jni 0.21.1",
  "libc",
  "log",
  "ndk 0.9.0",
@@ -4837,6 +4998,17 @@ dependencies = [
  "syn 2.0.117",
 ]
 
+[[package]]
+name = "tar"
+version = "0.4.45"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "22692a6476a21fa75fdfc11d452fda482af402c008cdbaf3476414e122040973"
+dependencies = [
+ "filetime",
+ "libc",
+ "xattr",
+]
+
 [[package]]
 name = "target-lexicon"
 version = "0.12.16"
@@ -4860,7 +5032,7 @@ dependencies = [
  "gtk",
  "heck 0.5.0",
  "http",
- "jni",
+ "jni 0.21.1",
  "libc",
  "log",
  "mime",
@@ -5010,6 +5182,39 @@ dependencies = [
  "zbus",
 ]
 
+[[package]]
+name = "tauri-plugin-updater"
+version = "2.10.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "806d9dac662c2e4594ff03c647a552f2c9bd544e7d0f683ec58f872f952ce4af"
+dependencies = [
+ "base64 0.22.1",
+ "dirs",
+ "flate2",
+ "futures-util",
+ "http",
+ "infer",
+ "log",
+ "minisign-verify",
+ "osakit",
+ "percent-encoding",
+ "reqwest 0.13.3",
+ "rustls",
+ "semver",
+ "serde",
+ "serde_json",
+ "tar",
+ "tauri",
+ "tauri-plugin",
+ "tempfile",
+ "thiserror 2.0.18",
+ "time",
+ "tokio",
+ "url",
+ "windows-sys 0.60.2",
+ "zip",
+]
+
 [[package]]
 name = "tauri-runtime"
 version = "2.10.1"
@@ -5020,7 +5225,7 @@ dependencies = [
  "dpi",
  "gtk",
  "http",
- "jni",
+ "jni 0.21.1",
  "objc2 0.6.4",
  "objc2-ui-kit",
  "objc2-web-kit",
@@ -5043,7 +5248,7 @@ checksum = "e11ea2e6f801d275fdd890d6c9603736012742a1c33b96d0db788c9cdebf7f9e"
 dependencies = [
  "gtk",
  "http",
- "jni",
+ "jni 0.21.1",
  "log",
  "objc2 0.6.4",
  "objc2-app-kit 0.3.2",
@@ -5984,6 +6189,15 @@ dependencies = [
  "system-deps",
 ]
 
+[[package]]
+name = "webpki-root-certs"
+version = "1.0.7"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f31141ce3fc3e300ae89b78c0dd67f9708061d1d2eda54b8209346fd6be9a92c"
+dependencies = [
+ "rustls-pki-types",
+]
+
 [[package]]
 name = "webpki-roots"
 version = "1.0.7"
@@ -6773,7 +6987,7 @@ dependencies = [
  "gtk",
  "http",
  "javascriptcore-rs",
- "jni",
+ "jni 0.21.1",
  "libc",
  "ndk 0.9.0",
  "objc2 0.6.4",
@@ -6837,6 +7051,16 @@ version = "0.13.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "ea6fc2961e4ef194dcbfe56bb845534d0dc8098940c7e5c012a258bfec6701bd"
 
+[[package]]
+name = "xattr"
+version = "1.6.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "32e45ad4206f6d2479085147f02bc2ef834ac85886624a23575ae137c8aa8156"
+dependencies = [
+ "libc",
+ "rustix",
+]
+
 [[package]]
 name = "xkbcommon"
 version = "0.7.0"
@@ -7018,6 +7242,18 @@ dependencies = [
  "syn 2.0.117",
 ]
 
+[[package]]
+name = "zip"
+version = "4.6.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "caa8cd6af31c3b31c6631b8f483848b91589021b28fffe50adada48d4f4d2ed1"
+dependencies = [
+ "arbitrary",
+ "crc32fast",
+ "indexmap 2.14.0",
+ "memchr",
+]
+
 [[package]]
 name = "zmij"
 version = "1.0.21"
diff --git a/openless-all/app/src-tauri/Cargo.toml b/openless-all/app/src-tauri/Cargo.toml
index ae8797f9..4ac05434 100644
--- a/openless-all/app/src-tauri/Cargo.toml
+++ b/openless-all/app/src-tauri/Cargo.toml
@@ -16,6 +16,7 @@ tauri-build = { version = "2", features = [] }
 [dependencies]
 tauri = { version = "2", features = ["macos-private-api", "tray-icon"] }
 tauri-plugin-shell = "2"
+tauri-plugin-updater = "2"
 tauri-plugin-single-instance = "2"
 serde = { version = "1", features = ["derive"] }
 serde_json = "1"
diff --git a/openless-all/app/src-tauri/capabilities/default.json b/openless-all/app/src-tauri/capabilities/default.json
index 3bcc3167..49dc8e6c 100644
--- a/openless-all/app/src-tauri/capabilities/default.json
+++ b/openless-all/app/src-tauri/capabilities/default.json
@@ -15,6 +15,7 @@
     "core:window:allow-close",
     "core:webview:default",
     "core:event:default",
-    "shell:allow-open"
+    "shell:allow-open",
+    "updater:default"
   ]
 }
diff --git a/openless-all/app/src-tauri/src/lib.rs b/openless-all/app/src-tauri/src/lib.rs
index 5ab0d7ce..1121287f 100644
--- a/openless-all/app/src-tauri/src/lib.rs
+++ b/openless-all/app/src-tauri/src/lib.rs
@@ -46,6 +46,7 @@ pub fn run() {
             show_main_window(app);
         }))
         .plugin(tauri_plugin_shell::init())
+        .plugin(tauri_plugin_updater::Builder::new().build())
         .manage(coordinator.clone())
         .setup(move |app| {
             // Capsule 启动时定位到屏幕底部居中并隐藏；coordinator 按需显示。
@@ -165,6 +166,7 @@ pub fn run() {
             commands::read_credential,
             commands::set_active_asr_provider,
             commands::set_active_llm_provider,
+            restart_app,
         ])
         .build(tauri::generate_context!())
         .expect("error while building tauri application")
@@ -187,6 +189,11 @@ pub fn run() {
         });
 }
 
+#[tauri::command]
+fn restart_app(app: AppHandle) {
+    app.restart();
+}
+
 /// 把日志同时写到 stderr + ~/Library/Logs/OpenLess/openless.log（match Swift `Log.swift`）。
 fn init_file_logger() {
     use simplelog::{
diff --git a/openless-all/app/src-tauri/tauri.conf.json b/openless-all/app/src-tauri/tauri.conf.json
index 6b32efa0..af421d31 100644
--- a/openless-all/app/src-tauri/tauri.conf.json
+++ b/openless-all/app/src-tauri/tauri.conf.json
@@ -65,5 +65,13 @@
       "infoPlist": "Info.plist",
       "entitlements": "Entitlements.plist"
     }
+  },
+  "plugins": {
+    "updater": {
+      "pubkey": "dW50cnVzdGVkIGNvbW1lbnQ6IG1pbmlzaWduIHB1YmxpYyBrZXk6IDFERUFBODAzNTY0QzMyM0YKUldRL01reFdBNmpxSGE1K0JadlpONXNWTzhJcGZCRGxjUVdIWExNNFJpeUNsSGZwazdlQThhemkK",
+      "endpoints": [
+        "https://github.com/appergb/openless/releases/latest/download/latest-{{target}}-{{arch}}.json"
+      ]
+    }
   }
 }
diff --git a/openless-all/app/src/components/SettingsModal.tsx b/openless-all/app/src/components/SettingsModal.tsx
index a5def4ef..fe7a0f68 100644
--- a/openless-all/app/src/components/SettingsModal.tsx
+++ b/openless-all/app/src/components/SettingsModal.tsx
@@ -7,8 +7,7 @@
 import { useEffect, useState, type CSSProperties } from 'react';
 import { useTranslation } from 'react-i18next';
 import { Icon } from './Icon';
-import { APP_VERSION_LABEL } from '../lib/appVersion';
-import { Settings as SettingsContent, type SettingsSectionId } from '../pages/Settings';
+import { AboutUpdateControl, Settings as SettingsContent, type SettingsSectionId } from '../pages/Settings';
 import { Row } from './ui/Row';
 import { openExternal } from '../lib/ipc';
 import {
@@ -219,17 +218,9 @@ function AboutMini() {
         <img src="AppIcon.png" alt="" style={{ width: 56, height: 56, borderRadius: 13, boxShadow: '0 4px 10px rgba(0,0,0,.10), 0 0 0 0.5px rgba(0,0,0,.06)' }} />
         <div>
           <div style={{ fontSize: 17, fontWeight: 600 }}>OpenLess</div>
-          <div style={{ fontSize: 12, color: 'var(--ol-ink-3)' }}>{t('modal.about.tagline')} · {APP_VERSION_LABEL}</div>
+          <AboutUpdateControl tagline={t('modal.about.tagline')} />
         </div>
       </div>
-      <Row label={t('modal.about.checkUpdate')}>
-        <button
-          style={btnGhost}
-          onClick={() => openExternal('https://github.com/appergb/openless/releases')}
-        >
-          {t('modal.about.checkUpdateBtn')}
-        </button>
-      </Row>
       <Row label={t('modal.about.docs')}>
         <button
           style={btnGhost}
diff --git a/openless-all/app/src/i18n/en.ts b/openless-all/app/src/i18n/en.ts
index 6781dfaf..6f54b553 100644
--- a/openless-all/app/src/i18n/en.ts
+++ b/openless-all/app/src/i18n/en.ts
@@ -15,6 +15,7 @@ export const en: typeof zhCN = {
     copy: 'Copy',
     delete: 'Delete',
     later: 'Later',
+    cancel: 'Cancel',
     close: 'Close',
     show: 'Show',
     hide: 'Hide',
@@ -243,6 +244,10 @@ export const en: typeof zhCN = {
     about: {
       tagline: 'Speak naturally, write perfectly',
       checkUpdate: 'Check for updates',
+      checkUpdateBtn: 'Check',
+      checkingUpdate: 'Checking…',
+      upToDate: 'You are already on the latest version.',
+      updateError: 'Update check or install failed. Please try again later.',
       openReleases: 'Open Releases',
       source: 'Source',
       docs: 'Docs',
@@ -253,6 +258,31 @@ export const en: typeof zhCN = {
       privacy: 'Privacy',
       privacyDesc: 'All transcripts stay on this device. Cloud APIs are only called for real-time transcription/polish; no recordings are retained.',
       localFirst: 'Local-first',
+      updateDialog: {
+        available: {
+          title: 'Update available',
+          desc: 'OpenLess {{version}} is available. Update now?',
+        },
+        downloading: {
+          title: 'Downloading update',
+          desc: 'Downloading OpenLess {{version}}. Keep the app open.',
+        },
+        downloaded: {
+          title: 'Update ready',
+          desc: 'OpenLess {{version}} has been installed. Restart automatically now to apply it?',
+        },
+        installing: {
+          title: 'Installing update',
+          desc: 'Installing OpenLess {{version}}. Keep the app open.',
+        },
+        install: 'Update now',
+        downloadingLabel: 'Downloading…',
+        installingLabel: 'Installing…',
+        later: 'Restart manually later',
+        restartNow: 'Restart now',
+        progress: '{{progress}}% · {{downloaded}} / {{total}}',
+        progressUnknown: '{{downloaded}} downloaded',
+      },
     },
   },
   modal: {
diff --git a/openless-all/app/src/i18n/zh-CN.ts b/openless-all/app/src/i18n/zh-CN.ts
index fad775b9..a7861edb 100644
--- a/openless-all/app/src/i18n/zh-CN.ts
+++ b/openless-all/app/src/i18n/zh-CN.ts
@@ -13,6 +13,7 @@ export const zhCN = {
     copy: '复制',
     delete: '删除',
     later: '稍后',
+    cancel: '取消',
     close: '关闭',
     show: '显示',
     hide: '隐藏',
@@ -241,6 +242,10 @@ export const zhCN = {
     about: {
       tagline: '自然说话，完美书写',
       checkUpdate: '检查更新',
+      checkUpdateBtn: '检查',
+      checkingUpdate: '检查中…',
+      upToDate: '当前已是最新版本。',
+      updateError: '检查或更新失败，请稍后重试。',
       openReleases: '打开 Releases',
       source: '源码',
       docs: '文档',
@@ -251,6 +256,31 @@ export const zhCN = {
       privacy: '隐私',
       privacyDesc: '所有识别结果仅保存在本机。云端 API 仅用于实时转写与润色，不会保留你的录音。',
       localFirst: '本地优先',
+      updateDialog: {
+        available: {
+          title: '发现新版本',
+          desc: '发现 OpenLess {{version}}，是否现在更新？',
+        },
+        downloading: {
+          title: '正在下载更新',
+          desc: '正在下载 OpenLess {{version}}，请保持应用打开。',
+        },
+        downloaded: {
+          title: '更新已准备好',
+          desc: 'OpenLess {{version}} 已安装完成。是否现在自动重启以应用更新？',
+        },
+        installing: {
+          title: '正在安装更新',
+          desc: '正在安装 OpenLess {{version}}，请保持应用打开。',
+        },
+        install: '现在更新',
+        downloadingLabel: '下载中…',
+        installingLabel: '安装中…',
+        later: '稍后手动重启',
+        restartNow: '现在重启',
+        progress: '{{progress}}% · {{downloaded}} / {{total}}',
+        progressUnknown: '已下载 {{downloaded}}',
+      },
     },
   },
   modal: {
diff --git a/openless-all/app/src/lib/ipc.ts b/openless-all/app/src/lib/ipc.ts
index 293d4723..3c15c098 100644
--- a/openless-all/app/src/lib/ipc.ts
+++ b/openless-all/app/src/lib/ipc.ts
@@ -216,6 +216,10 @@ export function triggerMicrophonePrompt(): Promise<void> {
   return invokeOrMock('trigger_microphone_prompt', undefined, () => undefined);
 }
 
+export function restartApp(): Promise<void> {
+  return invokeOrMock('restart_app', undefined, () => undefined);
+}
+
 export async function openExternal(url: string): Promise<void> {
   if (!isTauri) {
     window.open(url, '_blank', 'noopener,noreferrer');
diff --git a/openless-all/app/src/pages/Settings.tsx b/openless-all/app/src/pages/Settings.tsx
index fd71926d..ea171387 100644
--- a/openless-all/app/src/pages/Settings.tsx
+++ b/openless-all/app/src/pages/Settings.tsx
@@ -3,6 +3,7 @@
 // keep their inline-style literals 1:1 with the source JSX.
 
 import { useEffect, useRef, useState, type CSSProperties, type ReactNode } from 'react';
+import type { Update, DownloadEvent } from '@tauri-apps/plugin-updater';
 import { useTranslation } from 'react-i18next';
 import { Icon } from '../components/Icon';
 import { APP_VERSION_LABEL } from '../lib/appVersion';
@@ -11,11 +12,13 @@ import {
   checkAccessibilityPermission,
   checkMicrophonePermission,
   getHotkeyStatus,
+  isTauri,
   openExternal,
   openSystemSettings,
   readCredential,
   requestAccessibilityPermission,
   requestMicrophonePermission,
+  restartApp,
   setActiveAsrProvider,
   setActiveLlmProvider,
   setCredential,
@@ -752,10 +755,9 @@ function AboutSection() {
         >OL</div>
         <div>
           <div style={{ fontSize: 16, fontWeight: 600 }}>OpenLess</div>
-          <div style={{ fontSize: 12, color: 'var(--ol-ink-3)' }}>{t('settings.about.tagline')} · {APP_VERSION_LABEL}</div>
+          <AboutUpdateControl tagline={t('settings.about.tagline')} />
         </div>
       </div>
-      <SettingRow label={t('settings.about.checkUpdate')}><Btn variant="ghost" size="sm" onClick={() => openExternal('https://github.com/appergb/openless/releases')}>{t('settings.about.openReleases')}</Btn></SettingRow>
       <SettingRow label={t('settings.about.source')}><Btn variant="ghost" size="sm" icon="link" onClick={() => openExternal('https://github.com/appergb/openless')}>GitHub</Btn></SettingRow>
       <SettingRow label={t('settings.about.docs')}><Btn variant="ghost" size="sm" icon="link" onClick={() => openExternal('https://github.com/appergb/openless#readme')}>README</Btn></SettingRow>
       <SettingRow label={t('settings.about.feedback')}><Btn variant="ghost" size="sm" icon="link" onClick={() => openExternal('https://github.com/appergb/openless/issues')}>GitHub Issues</Btn></SettingRow>
@@ -781,6 +783,190 @@ function AboutSection() {
   );
 }
 
+type UpdateStatus = 'idle' | 'checking' | 'available' | 'none' | 'downloading' | 'installing' | 'downloaded' | 'error';
+
+export function AboutUpdateControl({ tagline }: { tagline: string }) {
+  const { t } = useTranslation();
+  const updateRef = useRef<Update | null>(null);
+  const [updateStatus, setUpdateStatus] = useState<UpdateStatus>('idle');
+  const [version, setVersion] = useState('');
+  const [downloaded, setDownloaded] = useState(0);
+  const [contentLength, setContentLength] = useState<number | null>(null);
+
+  const checking = updateStatus === 'checking';
+  const busy = updateStatus === 'downloading' || updateStatus === 'installing';
+  const progress = contentLength && contentLength > 0 ? Math.min(100, Math.round((downloaded / contentLength) * 100)) : null;
+
+  const closeUpdate = async () => {
+    const current = updateRef.current;
+    updateRef.current = null;
+    if (current) {
+      try {
+        await current.close();
+      } catch (error) {
+        console.warn('[settings] failed to close update resource', error);
+      }
+    }
+  };
+
+  useEffect(() => {
+    return () => {
+      void closeUpdate();
+    };
+  }, []);
+
+  const resetProgress = () => {
+    setDownloaded(0);
+    setContentLength(null);
+  };
+
+  const checkForUpdates = async () => {
+    setUpdateStatus('checking');
+    setVersion('');
+    resetProgress();
+    await closeUpdate();
+    try {
+      if (!isTauri) {
+        setUpdateStatus('none');
+        return;
+      }
+      const { check } = await import('@tauri-apps/plugin-updater');
+      const next = await check();
+      updateRef.current = next;
+      setVersion(next?.version ?? '');
+      setUpdateStatus(next ? 'available' : 'none');
+    } catch (error) {
+      console.error('[settings] failed to check update', error);
+      setUpdateStatus('error');
+    }
+  };
+
+  const installUpdate = async () => {
+    const update = updateRef.current;
+    if (!update) return;
+    resetProgress();
+    setUpdateStatus('downloading');
+    try {
+      await update.download((event: DownloadEvent) => {
+        if (event.event === 'Started') {
+          resetProgress();
+          setContentLength(event.data.contentLength ?? null);
+        } else if (event.event === 'Progress') {
+          setDownloaded(value => value + event.data.chunkLength);
+        } else if (event.event === 'Finished') {
+          setUpdateStatus('installing');
+        }
+      });
+      setUpdateStatus('installing');
+      await update.install();
+      await closeUpdate();
+      setUpdateStatus('downloaded');
+    } catch (error) {
+      console.error('[settings] failed to install update', error);
+      await closeUpdate();
+      setUpdateStatus('error');
+    }
+  };
+
+  const dismissUpdateDialog = async () => {
+    if (busy) return;
+    await closeUpdate();
+    setUpdateStatus('idle');
+    setVersion('');
+    resetProgress();
+  };
+
+  return (
+    <>
+      <div style={{ display: 'flex', alignItems: 'center', gap: 8, marginTop: 2 }}>
+        <span style={{ fontSize: 12, color: 'var(--ol-ink-3)' }}>{tagline} · {APP_VERSION_LABEL}</span>
+        <Btn variant="ghost" size="sm" onClick={checkForUpdates} disabled={checking || busy}>
+          {checking ? t('settings.about.checkingUpdate') : t('settings.about.checkUpdateBtn')}
+        </Btn>
+      </div>
+      {(updateStatus === 'none' || updateStatus === 'error') && (
+        <div style={{ fontSize: 11, color: updateStatus === 'error' ? 'var(--ol-err)' : 'var(--ol-ink-4)', marginTop: 4 }}>
+          {updateStatus === 'none' ? t('settings.about.upToDate') : t('settings.about.updateError')}
+        </div>
+      )}
+      {(updateStatus === 'available' || updateStatus === 'downloading' || updateStatus === 'installing' || updateStatus === 'downloaded') && (
+        <UpdateDialog
+          status={updateStatus}
+          version={version}
+          progress={progress}
+          downloaded={downloaded}
+          contentLength={contentLength}
+          onInstall={installUpdate}
+          onRestart={restartApp}
+          onClose={dismissUpdateDialog}
+        />
+      )}
+    </>
+  );
+}
+
+function UpdateDialog({
+  status,
+  version,
+  progress,
+  downloaded,
+  contentLength,
+  onInstall,
+  onRestart,
+  onClose,
+}: {
+  status: 'available' | 'downloading' | 'installing' | 'downloaded';
+  version: string;
+  progress: number | null;
+  downloaded: number;
+  contentLength: number | null;
+  onInstall: () => void;
+  onRestart: () => void;
+  onClose: () => void;
+}) {
+  const { t } = useTranslation();
+  const downloading = status === 'downloading';
+  const installing = status === 'installing';
+  return (
+    <div style={{ position: 'fixed', inset: 0, background: 'rgba(0,0,0,0.18)', display: 'grid', placeItems: 'center', zIndex: 40 }}>
+      <div style={{ width: 360, borderRadius: 16, background: 'var(--ol-surface)', border: '0.5px solid var(--ol-line-strong)', boxShadow: '0 18px 42px rgba(0,0,0,0.18)', padding: 18 }}>
+        <div style={{ fontSize: 15, fontWeight: 650, marginBottom: 8 }}>{t(`settings.about.updateDialog.${status}.title`)}</div>
+        <div style={{ fontSize: 12, color: 'var(--ol-ink-3)', lineHeight: 1.6, marginBottom: 14 }}>
+          {t(`settings.about.updateDialog.${status}.desc`, { version })}
+        </div>
+        {(downloading || installing || status === 'downloaded') && (
+          <div style={{ marginBottom: 14 }}>
+            <div style={{ height: 8, borderRadius: 999, background: 'var(--ol-surface-2)', overflow: 'hidden', border: '0.5px solid var(--ol-line)' }}>
+              <div style={{ height: '100%', width: `${status === 'downloaded' || installing ? 100 : progress ?? 8}%`, background: 'var(--ol-blue)', transition: 'width 0.18s ease-out' }} />
+            </div>
+            <div style={{ marginTop: 6, fontSize: 11, color: 'var(--ol-ink-4)' }}>
+              {installing
+                ? t('settings.about.updateDialog.installingLabel')
+                : progress === null
+                  ? t('settings.about.updateDialog.progressUnknown', { downloaded: formatBytes(downloaded) })
+                  : t('settings.about.updateDialog.progress', { progress, downloaded: formatBytes(downloaded), total: formatBytes(contentLength ?? 0) })}
+            </div>
+          </div>
+        )}
+        <div style={{ display: 'flex', justifyContent: 'flex-end', gap: 8 }}>
+          {status === 'available' && <Btn size="sm" onClick={onClose}>{t('common.cancel')}</Btn>}
+          {status === 'available' && <Btn variant="blue" size="sm" onClick={onInstall}>{t('settings.about.updateDialog.install')}</Btn>}
+          {(downloading || installing) && <Btn size="sm" disabled>{installing ? t('settings.about.updateDialog.installingLabel') : t('settings.about.updateDialog.downloadingLabel')}</Btn>}
+          {status === 'downloaded' && <Btn size="sm" onClick={onClose}>{t('settings.about.updateDialog.later')}</Btn>}
+          {status === 'downloaded' && <Btn variant="blue" size="sm" onClick={onRestart}>{t('settings.about.updateDialog.restartNow')}</Btn>}
+        </div>
+      </div>
+    </div>
+  );
+}
+
+function formatBytes(value: number) {
+  if (!Number.isFinite(value) || value <= 0) return '0 B';
+  if (value < 1024) return `${value} B`;
+  if (value < 1024 * 1024) return `${(value / 1024).toFixed(1)} KB`;
+  return `${(value / 1024 / 1024).toFixed(1)} MB`;
+}
+
 function HotkeyStatusPill({ status }: { status: HotkeyStatus | null }) {
   const { t } = useTranslation();
   if (!status) {
diff --git a/openless-all/app/src/pages/_atoms.tsx b/openless-all/app/src/pages/_atoms.tsx
index b49f4036..1c1d0993 100644
--- a/openless-all/app/src/pages/_atoms.tsx
+++ b/openless-all/app/src/pages/_atoms.tsx
@@ -103,9 +103,10 @@ interface BtnProps {
   icon?: string;
   style?: CSSProperties;
   onClick?: () => void;
+  disabled?: boolean;
 }
 
-export function Btn({ children, variant = 'ghost', size = 'md', icon, style, onClick }: BtnProps) {
+export function Btn({ children, variant = 'ghost', size = 'md', icon, style, onClick, disabled = false }: BtnProps) {
   const variants: Record<BtnVariant, { bg: string; color: string; bd: string; sh: string }> = {
     primary: { bg: 'var(--ol-ink)',     color: '#fff',                bd: 'transparent', sh: '0 1px 2px rgba(0,0,0,.08)' },
     blue:    { bg: 'var(--ol-blue)',    color: '#fff',                bd: 'transparent', sh: '0 1px 2px rgba(37,99,235,.18)' },
@@ -119,7 +120,8 @@ export function Btn({ children, variant = 'ghost', size = 'md', icon, style, onC
   };
   return (
     <button
-      onClick={onClick}
+      onClick={disabled ? undefined : onClick}
+      disabled={disabled}
       style={{
         display: 'inline-flex', alignItems: 'center', gap: 6,
         background: v.bg, color: v.color,
@@ -127,7 +129,8 @@ export function Btn({ children, variant = 'ghost', size = 'md', icon, style, onC
         borderRadius: 8,
         boxShadow: v.sh,
         fontFamily: 'inherit', fontWeight: 500,
-        cursor: 'default',
+        cursor: disabled ? 'not-allowed' : 'default',
+        opacity: disabled ? 0.55 : 1,
         transition: 'background 0.12s ease-out, color 0.12s ease-out, border-color 0.12s ease-out, box-shadow 0.12s ease-out, transform 0.08s ease-out',
         ...sizes[size],
         ...style,