diff --git a/.github/workflows/autobuild.yml b/.github/workflows/autobuild.yml
index d089f1a1c..f793e849e 100644
--- a/.github/workflows/autobuild.yml
+++ b/.github/workflows/autobuild.yml
@@ -206,6 +206,9 @@ jobs:
       - name: Release ${{ env.TAG_CHANNEL }} Version
         run: pnpm release-version autobuild-latest
 
+      - name: Override updater endpoints for autobuild
+        run: pnpm override-updater-endpoints autobuild
+
       - name: Add Rust Target
         run: |
           # Ensure cross target is installed for the pinned toolchain; fallback without explicit toolchain if needed
@@ -304,6 +307,9 @@ jobs:
       - name: Release ${{ env.TAG_CHANNEL }} Version
         run: pnpm release-version autobuild-latest
 
+      - name: Override updater endpoints for autobuild
+        run: pnpm override-updater-endpoints autobuild
+
       - name: 'Setup for linux'
         run: |-
           sudo ls -lR /etc/apt/
@@ -449,6 +455,9 @@ jobs:
       - name: Release ${{ env.TAG_CHANNEL }} Version
         run: pnpm release-version autobuild-latest
 
+      - name: Override updater endpoints for autobuild
+        run: pnpm override-updater-endpoints autobuild
+
       - name: Download WebView2 Runtime
         run: |
           invoke-webrequest -uri https://github.com/westinyang/WebView2RuntimeArchive/releases/download/133.0.3065.92/Microsoft.WebView2.FixedVersionRuntime.133.0.3065.92.${{ matrix.arch }}.cab -outfile Microsoft.WebView2.FixedVersionRuntime.133.0.3065.92.${{ matrix.arch }}.cab
@@ -510,6 +519,37 @@ jobs:
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
 
+  release-update-autobuild:
+    name: Release Autobuild Updater
+    runs-on: ubuntu-latest
+    needs:
+      [
+        autobuild-x86-windows-macos-linux,
+        autobuild-arm-linux,
+        autobuild-x86-arm-windows_webview2,
+      ]
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v6
+
+      - name: Install Node
+        uses: actions/setup-node@v6
+        with:
+          node-version: '24.14.1'
+
+      - uses: pnpm/action-setup@v5.0.0
+        name: Install pnpm
+        with:
+          run_install: false
+
+      - name: Pnpm install
+        run: pnpm i
+
+      - name: Release autobuild updater file
+        run: pnpm updater-autobuild
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+
   notify-telegram:
     name: Notify Telegram
     runs-on: ubuntu-latest
@@ -519,6 +559,7 @@ jobs:
         autobuild-x86-windows-macos-linux,
         autobuild-arm-linux,
         autobuild-x86-arm-windows_webview2,
+        release-update-autobuild,
       ]
     steps:
       - name: Checkout repository
diff --git a/package.json b/package.json
index 8d98cf12f..565794455 100644
--- a/package.json
+++ b/package.json
@@ -16,7 +16,9 @@
     "web:serve": "vite preview",
     "prebuild": "node scripts/prebuild.mjs",
     "updater": "node scripts/updater.mjs",
+    "updater-autobuild": "node scripts/updater.mjs autobuild",
     "updater-fixed-webview2": "node scripts/updater-fixed-webview2.mjs",
+    "override-updater-endpoints": "node scripts/override-updater-endpoints.mjs",
     "portable": "node scripts/portable.mjs",
     "portable-fixed-webview2": "node scripts/portable-fixed-webview2.mjs",
     "fix-alpha-version": "node scripts/fix-alpha_version.mjs",
diff --git a/scripts/override-updater-endpoints.mjs b/scripts/override-updater-endpoints.mjs
new file mode 100644
index 000000000..241595b1d
--- /dev/null
+++ b/scripts/override-updater-endpoints.mjs
@@ -0,0 +1,32 @@
+/**
+ * Override updater endpoints in tauri.conf.json for a specific channel.
+ *
+ * Usage:
+ *   node scripts/override-updater-endpoints.mjs <channel>
+ *
+ * Example:
+ *   node scripts/override-updater-endpoints.mjs autobuild
+ *   # Changes: .../releases/download/updater/update.json
+ *   #      → : .../releases/download/updater-autobuild/update.json
+ */
+import fs from 'fs'
+import path from 'path'
+
+const channel = process.argv[2]
+if (!channel) {
+  console.error('Usage: node scripts/override-updater-endpoints.mjs <channel>')
+  process.exit(1)
+}
+
+const configPath = path.join(process.cwd(), 'src-tauri', 'tauri.conf.json')
+const config = JSON.parse(fs.readFileSync(configPath, 'utf8'))
+
+config.plugins.updater.endpoints = config.plugins.updater.endpoints.map(
+  (endpoint) =>
+    endpoint.replace('/download/updater/', `/download/updater-${channel}/`),
+)
+
+fs.writeFileSync(configPath, JSON.stringify(config, null, 2))
+
+console.log(`[INFO]: Updater endpoints switched to "${channel}" channel:`)
+config.plugins.updater.endpoints.forEach((e) => console.log(`  ${e}`))
diff --git a/scripts/updater.mjs b/scripts/updater.mjs
index c7bc65a89..87624f141 100644
--- a/scripts/updater.mjs
+++ b/scripts/updater.mjs
@@ -3,26 +3,203 @@ import fetch from 'node-fetch'
 
 import { resolveUpdateLog, resolveUpdateLogDefault } from './updatelog.mjs'
 
-// Add stable update JSON filenames
-const UPDATE_TAG_NAME = 'updater'
-const UPDATE_JSON_FILE = 'update.json'
-const UPDATE_JSON_PROXY = 'update-proxy.json'
-// Add alpha update JSON filenames
-const ALPHA_TAG_NAME = 'updater-alpha'
-const ALPHA_UPDATE_JSON_FILE = 'update.json'
-const ALPHA_UPDATE_JSON_PROXY = 'update-proxy.json'
+/// get the signature file content
+async function getSignature(url) {
+  const response = await fetch(url, {
+    method: 'GET',
+    headers: { 'Content-Type': 'application/octet-stream' },
+  })
+  return response.text()
+}
 
-/// generate update.json
-/// upload to update tag's release asset
-async function resolveUpdater() {
-  if (process.env.GITHUB_TOKEN === undefined) {
-    throw new Error('GITHUB_TOKEN is required')
+function buildPlatformData() {
+  return {
+    win64: { signature: '', url: '' },
+    linux: { signature: '', url: '' },
+    darwin: { signature: '', url: '' },
+    'darwin-aarch64': { signature: '', url: '' },
+    'darwin-intel': { signature: '', url: '' },
+    'darwin-x86_64': { signature: '', url: '' },
+    'linux-x86_64': { signature: '', url: '' },
+    'linux-x86': { signature: '', url: '' },
+    'linux-i686': { signature: '', url: '' },
+    'linux-aarch64': { signature: '', url: '' },
+    'linux-armv7': { signature: '', url: '' },
+    'windows-x86_64': { signature: '', url: '' },
+    'windows-aarch64': { signature: '', url: '' },
+    'windows-x86': { signature: '', url: '' },
+    'windows-i686': { signature: '', url: '' },
+  }
+}
+
+/// Map release assets to platform update data
+async function processAssets(release, updateData) {
+  const promises = release.assets.map(async (asset) => {
+    const { name, browser_download_url } = asset
+
+    // win64 url
+    if (name.endsWith('x64-setup.exe')) {
+      updateData.platforms.win64.url = browser_download_url
+      updateData.platforms['windows-x86_64'].url = browser_download_url
+    }
+    // win64 signature
+    if (name.endsWith('x64-setup.exe.sig')) {
+      const sig = await getSignature(browser_download_url)
+      updateData.platforms.win64.signature = sig
+      updateData.platforms['windows-x86_64'].signature = sig
+    }
+
+    // win32 url
+    if (name.endsWith('x86-setup.exe')) {
+      updateData.platforms['windows-x86'].url = browser_download_url
+      updateData.platforms['windows-i686'].url = browser_download_url
+    }
+    // win32 signature
+    if (name.endsWith('x86-setup.exe.sig')) {
+      const sig = await getSignature(browser_download_url)
+      updateData.platforms['windows-x86'].signature = sig
+      updateData.platforms['windows-i686'].signature = sig
+    }
+
+    // win arm url
+    if (name.endsWith('arm64-setup.exe')) {
+      updateData.platforms['windows-aarch64'].url = browser_download_url
+    }
+    // win arm signature
+    if (name.endsWith('arm64-setup.exe.sig')) {
+      const sig = await getSignature(browser_download_url)
+      updateData.platforms['windows-aarch64'].signature = sig
+    }
+
+    // darwin url (intel)
+    if (name.endsWith('.app.tar.gz') && !name.includes('aarch')) {
+      updateData.platforms.darwin.url = browser_download_url
+      updateData.platforms['darwin-intel'].url = browser_download_url
+      updateData.platforms['darwin-x86_64'].url = browser_download_url
+    }
+    // darwin signature (intel)
+    if (name.endsWith('.app.tar.gz.sig') && !name.includes('aarch')) {
+      const sig = await getSignature(browser_download_url)
+      updateData.platforms.darwin.signature = sig
+      updateData.platforms['darwin-intel'].signature = sig
+      updateData.platforms['darwin-x86_64'].signature = sig
+    }
+
+    // darwin url (aarch)
+    if (name.endsWith('aarch64.app.tar.gz')) {
+      updateData.platforms['darwin-aarch64'].url = browser_download_url
+      // 使linux可以检查更新
+      updateData.platforms.linux.url = browser_download_url
+      updateData.platforms['linux-x86_64'].url = browser_download_url
+      updateData.platforms['linux-x86'].url = browser_download_url
+      updateData.platforms['linux-i686'].url = browser_download_url
+      updateData.platforms['linux-aarch64'].url = browser_download_url
+      updateData.platforms['linux-armv7'].url = browser_download_url
+    }
+    // darwin signature (aarch)
+    if (name.endsWith('aarch64.app.tar.gz.sig')) {
+      const sig = await getSignature(browser_download_url)
+      updateData.platforms['darwin-aarch64'].signature = sig
+      updateData.platforms.linux.signature = sig
+      updateData.platforms['linux-x86_64'].signature = sig
+      updateData.platforms['linux-x86'].signature = sig
+      updateData.platforms['linux-i686'].signature = sig
+      updateData.platforms['linux-aarch64'].signature = sig
+      updateData.platforms['linux-armv7'].signature = sig
+    }
+  })
+
+  await Promise.allSettled(promises)
+}
+
+/// Remove platforms without URLs, generate proxy data
+function finalizeUpdateData(updateData) {
+  Object.entries(updateData.platforms).forEach(([key, value]) => {
+    if (!value.url) {
+      console.log(`[Error]: failed to parse release for "${key}"`)
+      delete updateData.platforms[key]
+    }
+  })
+
+  const proxyData = JSON.parse(JSON.stringify(updateData))
+  Object.entries(proxyData.platforms).forEach(([key, value]) => {
+    if (value.url) {
+      proxyData.platforms[key].url = 'https://update.hwdns.net/' + value.url
+    } else {
+      console.log(`[Error]: proxyData.platforms.${key} is null`)
+    }
+  })
+
+  return proxyData
+}
+
+/// Upload update JSON files to a release tag (creates release if not found)
+async function uploadToRelease(
+  github,
+  options,
+  { tagName, jsonFile, proxyFile, releaseName, releaseBody, prerelease },
+  updateData,
+  proxyData,
+) {
+  let updateRelease
+
+  try {
+    const response = await github.rest.repos.getReleaseByTag({
+      ...options,
+      tag: tagName,
+    })
+    updateRelease = response.data
+    console.log(
+      `Found existing ${tagName} release with ID: ${updateRelease.id}`,
+    )
+  } catch (error) {
+    if (error.status === 404) {
+      console.log(`Release ${tagName} not found, creating...`)
+      const createResponse = await github.rest.repos.createRelease({
+        ...options,
+        tag_name: tagName,
+        name: releaseName,
+        body: releaseBody,
+        prerelease: !!prerelease,
+      })
+      updateRelease = createResponse.data
+      console.log(`Created ${tagName} release with ID: ${updateRelease.id}`)
+    } else {
+      throw error
+    }
   }
 
-  const options = { owner: context.repo.owner, repo: context.repo.repo }
-  const github = getOctokit(process.env.GITHUB_TOKEN)
+  // Delete existing assets with matching names
+  for (const asset of updateRelease.assets) {
+    if (asset.name === jsonFile || asset.name === proxyFile) {
+      await github.rest.repos
+        .deleteReleaseAsset({ ...options, asset_id: asset.id })
+        .catch(console.error)
+    }
+  }
 
-  // Fetch all tags using pagination
+  // Upload new assets
+  await github.rest.repos.uploadReleaseAsset({
+    ...options,
+    release_id: updateRelease.id,
+    name: jsonFile,
+    data: JSON.stringify(updateData, null, 2),
+  })
+
+  await github.rest.repos.uploadReleaseAsset({
+    ...options,
+    release_id: updateRelease.id,
+    name: proxyFile,
+    data: JSON.stringify(proxyData, null, 2),
+  })
+
+  console.log(`Successfully uploaded update files to ${tagName}`)
+}
+
+// ─── Channel: stable (default) ──────────────────────────���───────────────────
+
+async function resolveStableChannel(github, options) {
+  // Fetch tags to find the latest stable release (vX.Y.Z)
   let allTags = []
   let page = 1
   const perPage = 100
@@ -33,289 +210,226 @@ async function resolveUpdater() {
       per_page: perPage,
       page: page,
     })
-
     allTags = allTags.concat(pageTags)
-
-    // Break if we received fewer tags than requested (last page)
-    if (pageTags.length < perPage) {
-      break
-    }
-
+    if (pageTags.length < perPage) break
     page++
   }
 
-  const tags = allTags
-  console.log(`Retrieved ${tags.length} tags in total`)
+  console.log(`Retrieved ${allTags.length} tags in total`)
 
-  // More flexible tag detection with regex patterns
-  const stableTagRegex = /^v\d+\.\d+\.\d+$/ // Matches vX.Y.Z format
-  // const preReleaseRegex = /^v\d+\.\d+\.\d+-(alpha|beta|rc|pre)/i; // Matches vX.Y.Z-alpha/beta/rc format
-  const preReleaseRegex = /^(alpha|beta|rc|pre)$/i // Matches exact alpha/beta/rc/pre tags
+  const stableTag = allTags.find((t) => /^v\d+\.\d+\.\d+$/.test(t.name))
 
-  // Get the latest stable tag and pre-release tag
-  const stableTag = tags.find((t) => stableTagRegex.test(t.name))
-  const preReleaseTag = tags.find((t) => preReleaseRegex.test(t.name))
-
-  console.log('All tags:', tags.map((t) => t.name).join(', '))
   console.log('Stable tag:', stableTag ? stableTag.name : 'None found')
-  console.log(
-    'Pre-release tag:',
-    preReleaseTag ? preReleaseTag.name : 'None found',
-  )
-  console.log()
 
-  // Process stable release
-  if (stableTag) {
-    await processRelease(github, options, stableTag, false)
+  if (!stableTag) {
+    console.log('No stable tag found, nothing to do')
+    return
   }
 
-  // Process pre-release if found
-  if (preReleaseTag) {
-    await processRelease(github, options, preReleaseTag, true)
-  }
-}
-
-// Process a release (stable or alpha) and generate update files
-async function processRelease(github, options, tag, isAlpha) {
-  if (!tag) return
-
   try {
     const { data: release } = await github.rest.repos.getReleaseByTag({
       ...options,
-      tag: tag.name,
+      tag: stableTag.name,
     })
 
     const updateData = {
-      name: tag.name,
-      notes: await resolveUpdateLog(tag.name).catch(() =>
+      name: stableTag.name,
+      notes: await resolveUpdateLog(stableTag.name).catch(() =>
         resolveUpdateLogDefault().catch(() => 'No changelog available'),
       ),
       pub_date: new Date().toISOString(),
-      platforms: {
-        win64: { signature: '', url: '' }, // compatible with older formats
-        linux: { signature: '', url: '' }, // compatible with older formats
-        darwin: { signature: '', url: '' }, // compatible with older formats
-        'darwin-aarch64': { signature: '', url: '' },
-        'darwin-intel': { signature: '', url: '' },
-        'darwin-x86_64': { signature: '', url: '' },
-        'linux-x86_64': { signature: '', url: '' },
-        'linux-x86': { signature: '', url: '' },
-        'linux-i686': { signature: '', url: '' },
-        'linux-aarch64': { signature: '', url: '' },
-        'linux-armv7': { signature: '', url: '' },
-        'windows-x86_64': { signature: '', url: '' },
-        'windows-aarch64': { signature: '', url: '' },
-        'windows-x86': { signature: '', url: '' },
-        'windows-i686': { signature: '', url: '' },
-      },
+      platforms: buildPlatformData(),
     }
 
-    const promises = release.assets.map(async (asset) => {
-      const { name, browser_download_url } = asset
-
-      // Process all the platform URL and signature data
-      // win64 url
-      if (name.endsWith('x64-setup.exe')) {
-        updateData.platforms.win64.url = browser_download_url
-        updateData.platforms['windows-x86_64'].url = browser_download_url
-      }
-      // win64 signature
-      if (name.endsWith('x64-setup.exe.sig')) {
-        const sig = await getSignature(browser_download_url)
-        updateData.platforms.win64.signature = sig
-        updateData.platforms['windows-x86_64'].signature = sig
-      }
-
-      // win32 url
-      if (name.endsWith('x86-setup.exe')) {
-        updateData.platforms['windows-x86'].url = browser_download_url
-        updateData.platforms['windows-i686'].url = browser_download_url
-      }
-      // win32 signature
-      if (name.endsWith('x86-setup.exe.sig')) {
-        const sig = await getSignature(browser_download_url)
-        updateData.platforms['windows-x86'].signature = sig
-        updateData.platforms['windows-i686'].signature = sig
-      }
-
-      // win arm url
-      if (name.endsWith('arm64-setup.exe')) {
-        updateData.platforms['windows-aarch64'].url = browser_download_url
-      }
-      // win arm signature
-      if (name.endsWith('arm64-setup.exe.sig')) {
-        const sig = await getSignature(browser_download_url)
-        updateData.platforms['windows-aarch64'].signature = sig
-      }
-
-      // darwin url (intel)
-      if (name.endsWith('.app.tar.gz') && !name.includes('aarch')) {
-        updateData.platforms.darwin.url = browser_download_url
-        updateData.platforms['darwin-intel'].url = browser_download_url
-        updateData.platforms['darwin-x86_64'].url = browser_download_url
-      }
-      // darwin signature (intel)
-      if (name.endsWith('.app.tar.gz.sig') && !name.includes('aarch')) {
-        const sig = await getSignature(browser_download_url)
-        updateData.platforms.darwin.signature = sig
-        updateData.platforms['darwin-intel'].signature = sig
-        updateData.platforms['darwin-x86_64'].signature = sig
-      }
-
-      // darwin url (aarch)
-      if (name.endsWith('aarch64.app.tar.gz')) {
-        updateData.platforms['darwin-aarch64'].url = browser_download_url
-        // 使linux可以检查更新
-        updateData.platforms.linux.url = browser_download_url
-        updateData.platforms['linux-x86_64'].url = browser_download_url
-        updateData.platforms['linux-x86'].url = browser_download_url
-        updateData.platforms['linux-i686'].url = browser_download_url
-        updateData.platforms['linux-aarch64'].url = browser_download_url
-        updateData.platforms['linux-armv7'].url = browser_download_url
-      }
-      // darwin signature (aarch)
-      if (name.endsWith('aarch64.app.tar.gz.sig')) {
-        const sig = await getSignature(browser_download_url)
-        updateData.platforms['darwin-aarch64'].signature = sig
-        updateData.platforms.linux.signature = sig
-        updateData.platforms['linux-x86_64'].signature = sig
-        updateData.platforms['linux-x86'].url = browser_download_url
-        updateData.platforms['linux-i686'].url = browser_download_url
-        updateData.platforms['linux-aarch64'].signature = sig
-        updateData.platforms['linux-armv7'].signature = sig
-      }
-    })
-
-    await Promise.allSettled(promises)
+    await processAssets(release, updateData)
     console.log(updateData)
 
-    // maybe should test the signature as well
-    // delete the null field
-    Object.entries(updateData.platforms).forEach(([key, value]) => {
-      if (!value.url) {
-        console.log(`[Error]: failed to parse release for "${key}"`)
-        delete updateData.platforms[key]
-      }
-    })
+    const proxyData = finalizeUpdateData(updateData)
 
-    // Generate a proxy update file for accelerated GitHub resources
-    const updateDataNew = JSON.parse(JSON.stringify(updateData))
-
-    Object.entries(updateDataNew.platforms).forEach(([key, value]) => {
-      if (value.url) {
-        updateDataNew.platforms[key].url =
-          'https://update.hwdns.net/' + value.url
-      } else {
-        console.log(`[Error]: updateDataNew.platforms.${key} is null`)
-      }
-    })
-
-    // Get the appropriate updater release based on isAlpha flag
-    const releaseTag = isAlpha ? ALPHA_TAG_NAME : UPDATE_TAG_NAME
-    console.log(
-      `Processing ${isAlpha ? 'alpha' : 'stable'} release:`,
-      releaseTag,
+    await uploadToRelease(
+      github,
+      options,
+      {
+        tagName: 'updater',
+        jsonFile: 'update.json',
+        proxyFile: 'update-proxy.json',
+        releaseName: 'Auto-update Stable Channel',
+        releaseBody:
+          'This release contains the update information for stable channel.',
+        prerelease: false,
+      },
+      updateData,
+      proxyData,
     )
-
-    try {
-      let updateRelease
-
-      try {
-        // Try to get the existing release
-        const response = await github.rest.repos.getReleaseByTag({
-          ...options,
-          tag: releaseTag,
-        })
-        updateRelease = response.data
-        console.log(
-          `Found existing ${releaseTag} release with ID: ${updateRelease.id}`,
-        )
-      } catch (error) {
-        // If release doesn't exist, create it
-        if (error.status === 404) {
-          console.log(
-            `Release with tag ${releaseTag} not found, creating new release...`,
-          )
-          const createResponse = await github.rest.repos.createRelease({
-            ...options,
-            tag_name: releaseTag,
-            name: isAlpha
-              ? 'Auto-update Alpha Channel'
-              : 'Auto-update Stable Channel',
-            body: `This release contains the update information for ${isAlpha ? 'alpha' : 'stable'} channel.`,
-            prerelease: isAlpha,
-          })
-          updateRelease = createResponse.data
-          console.log(
-            `Created new ${releaseTag} release with ID: ${updateRelease.id}`,
-          )
-        } else {
-          // If it's another error, throw it
-          throw error
-        }
-      }
-
-      // File names based on release type
-      const jsonFile = isAlpha ? ALPHA_UPDATE_JSON_FILE : UPDATE_JSON_FILE
-      const proxyFile = isAlpha ? ALPHA_UPDATE_JSON_PROXY : UPDATE_JSON_PROXY
-
-      // Delete existing assets with these names
-      for (const asset of updateRelease.assets) {
-        if (asset.name === jsonFile) {
-          await github.rest.repos.deleteReleaseAsset({
-            ...options,
-            asset_id: asset.id,
-          })
-        }
-
-        if (asset.name === proxyFile) {
-          await github.rest.repos
-            .deleteReleaseAsset({ ...options, asset_id: asset.id })
-            .catch(console.error) // do not break the pipeline
-        }
-      }
-
-      // Upload new assets
-      await github.rest.repos.uploadReleaseAsset({
-        ...options,
-        release_id: updateRelease.id,
-        name: jsonFile,
-        data: JSON.stringify(updateData, null, 2),
-      })
-
-      await github.rest.repos.uploadReleaseAsset({
-        ...options,
-        release_id: updateRelease.id,
-        name: proxyFile,
-        data: JSON.stringify(updateDataNew, null, 2),
-      })
-
-      console.log(
-        `Successfully uploaded ${isAlpha ? 'alpha' : 'stable'} update files to ${releaseTag}`,
-      )
-    } catch (error) {
-      console.error(
-        `Failed to process ${isAlpha ? 'alpha' : 'stable'} release:`,
-        error.message,
-      )
-    }
   } catch (error) {
     if (error.status === 404) {
-      console.log(`Release not found for tag: ${tag.name}, skipping...`)
+      console.log(`Release not found for tag: ${stableTag.name}, skipping...`)
     } else {
-      console.error(`Failed to get release for tag: ${tag.name}`, error.message)
+      console.error(
+        `Failed to get release for tag: ${stableTag.name}`,
+        error.message,
+      )
     }
   }
 }
 
-// get the signature file content
-async function getSignature(url) {
-  const response = await fetch(url, {
-    method: 'GET',
-    headers: { 'Content-Type': 'application/octet-stream' },
-  })
+// ─── Channel: autobuild ─────────────────────────────────────────────────────
 
-  return response.text()
+function parseBaseVersion(version) {
+  if (!version) return null
+  const match = version.replace(/^v/i, '').match(/^(\d+)\.(\d+)\.(\d+)/)
+  if (!match) return null
+  return [parseInt(match[1]), parseInt(match[2]), parseInt(match[3])]
 }
 
-resolveUpdater().catch(console.error)
+function compareBase(a, b) {
+  if (!a || !b) return 0
+  for (let i = 0; i < 3; i++) {
+    if (a[i] > b[i]) return 1
+    if (a[i] < b[i]) return -1
+  }
+  return 0
+}
+
+function extractVersionFromAssets(assets) {
+  for (const asset of assets) {
+    const match = asset.name.match(
+      /Clash[._]Verge[_-]([\d]+\.[\d]+\.[\d]+(?:[+][^\s_]+)?)/,
+    )
+    if (match) return match[1]
+  }
+  return null
+}
+
+async function resolveAutobuildChannel(github, options) {
+  // 1. Get autobuild release
+  let autobuildRelease = null
+  try {
+    const { data } = await github.rest.repos.getReleaseByTag({
+      ...options,
+      tag: 'autobuild',
+    })
+    autobuildRelease = data
+  } catch (error) {
+    if (error.status === 404) {
+      console.log('No autobuild release found')
+    } else {
+      throw error
+    }
+  }
+
+  // 2. Get latest stable release (vX.Y.Z tag)
+  let stableRelease = null
+  let stableTag = null
+  const { data: tags } = await github.rest.repos.listTags({
+    ...options,
+    per_page: 20,
+  })
+  stableTag = tags.find((t) => /^v\d+\.\d+\.\d+$/.test(t.name))
+
+  if (stableTag) {
+    try {
+      const { data } = await github.rest.repos.getReleaseByTag({
+        ...options,
+        tag: stableTag.name,
+      })
+      stableRelease = data
+    } catch (error) {
+      if (error.status !== 404) throw error
+    }
+  }
+
+  // 3. Compare base versions — stable wins only if strictly higher
+  const autobuildVersion = autobuildRelease
+    ? extractVersionFromAssets(autobuildRelease.assets)
+    : null
+  const stableVersion = stableTag?.name?.replace(/^v/, '') ?? null
+
+  console.log(
+    `Autobuild version: ${autobuildVersion} (base: ${parseBaseVersion(autobuildVersion)})`,
+  )
+  console.log(
+    `Stable version: ${stableVersion} (base: ${parseBaseVersion(stableVersion)})`,
+  )
+
+  let useRelease, useVersion
+  const cmp = compareBase(
+    parseBaseVersion(stableVersion),
+    parseBaseVersion(autobuildVersion),
+  )
+
+  if (cmp > 0 && stableRelease) {
+    console.log('→ Using stable release (higher base version)')
+    useRelease = stableRelease
+    useVersion = stableVersion
+  } else if (autobuildRelease && autobuildVersion) {
+    console.log('→ Using autobuild release')
+    useRelease = autobuildRelease
+    useVersion = autobuildVersion
+  } else if (stableRelease) {
+    console.log('→ Falling back to stable release (no autobuild available)')
+    useRelease = stableRelease
+    useVersion = stableVersion
+  } else {
+    console.log('No releases found, nothing to do')
+    return
+  }
+
+  // 4. Build update data
+  const notes = await resolveUpdateLogDefault().catch(
+    () =>
+      'More new features are now supported. Check release page for details.',
+  )
+
+  const updateData = {
+    version: useVersion,
+    name: useVersion,
+    notes,
+    pub_date: new Date().toISOString(),
+    platforms: buildPlatformData(),
+  }
+
+  await processAssets(useRelease, updateData)
+  console.log(updateData)
+
+  const proxyData = finalizeUpdateData(updateData)
+
+  await uploadToRelease(
+    github,
+    options,
+    {
+      tagName: 'updater-autobuild',
+      jsonFile: 'update.json',
+      proxyFile: 'update-proxy.json',
+      releaseName: 'Auto-update AutoBuild Channel',
+      releaseBody:
+        'This release contains the update information for the AutoBuild channel.',
+      prerelease: true,
+    },
+    updateData,
+    proxyData,
+  )
+}
+
+// ─── Main ────────────────────────────────────────────────────────────────────
+
+async function main() {
+  if (!process.env.GITHUB_TOKEN) {
+    throw new Error('GITHUB_TOKEN is required')
+  }
+
+  const options = { owner: context.repo.owner, repo: context.repo.repo }
+  const github = getOctokit(process.env.GITHUB_TOKEN)
+
+  const channel = process.argv[2]
+
+  if (channel === 'autobuild') {
+    console.log('=== Resolving autobuild channel ===')
+    await resolveAutobuildChannel(github, options)
+  } else {
+    console.log('=== Resolving stable channel ===')
+    await resolveStableChannel(github, options)
+  }
+}
+
+main().catch(console.error)
diff --git a/src/services/update.ts b/src/services/update.ts
index f270c176e..dfd6d248e 100644
--- a/src/services/update.ts
+++ b/src/services/update.ts
@@ -134,7 +134,11 @@ const localVersionNormalized = normalizeVersion(appVersion)
 export const checkUpdateSafe = async (
   options?: CheckOptions,
 ): Promise<Update | null> => {
-  const result = await check({ ...(options ?? {}), allowDowngrades: false })
+  // allowDowngrades: true so the Tauri plugin always returns an Update object.
+  // Semver ignores build metadata (+autobuild.MMDD.hash), so the plugin would
+  // treat same-base autobuild versions as equal and return null.
+  // Our custom compareVersions below handles the actual upgrade decision.
+  const result = await check({ ...(options ?? {}), allowDowngrades: true })
   if (!result) return null
 
   const remoteVersion = resolveRemoteVersion(result)