diff --git a/eslint.config.js b/eslint.config.js
index 2dc43fb..7212850 100644
--- a/eslint.config.js
+++ b/eslint.config.js
@@ -25,7 +25,13 @@ export default [
             indent: ['error', 4],
             quotes: ['error', 'single', { avoidEscape: true }],
             semi: ['error', 'never'],
-            'no-unused-vars': ['warn', { argsIgnorePattern: '^_' }],
+            'no-unused-vars': [
+                'warn',
+                {
+                    argsIgnorePattern: '^_',
+                    varsIgnorePattern: '^currentUpdateInfo_$',
+                },
+            ],
             'no-constant-condition': ['warn', { checkLoops: false }],
             'no-console': 'off',
         },
diff --git a/package.json b/package.json
index ee62ca9..600326a 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
     "name": "UPX-Tools",
-    "version": "1.3.0",
+    "version": "1.4.5",
     "type": "module",
     "description": "UPX 可视化加壳/脱壳工具",
     "scripts": {
diff --git a/src-tauri/Cargo.lock b/src-tauri/Cargo.lock
index 6c816a6..15c1e8b 100644
--- a/src-tauri/Cargo.lock
+++ b/src-tauri/Cargo.lock
@@ -4,7 +4,7 @@ version = 4
 
 [[package]]
 name = "UPX-Tools"
-version = "1.3.0"
+version = "1.4.5"
 dependencies = [
  "encoding_rs",
  "reqwest",
diff --git a/src-tauri/Cargo.toml b/src-tauri/Cargo.toml
index 5f0c6c4..bf398e3 100644
--- a/src-tauri/Cargo.toml
+++ b/src-tauri/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "UPX-Tools"
-version = "1.3.0"
+version = "1.4.5"
 description = "UPX 可视化加壳脱壳工具"
 authors = ["ASLant"]
 edition = "2021"
diff --git a/src-tauri/src/main.rs b/src-tauri/src/main.rs
index f49f1f8..43b084d 100644
--- a/src-tauri/src/main.rs
+++ b/src-tauri/src/main.rs
@@ -559,8 +559,7 @@ struct UpdateInfo {
     release_name: String,
     release_notes: String,
     published_at: String,
-    download_url: Option<String>,
-    download_size: Option<u64>,
+    assets: Vec<GitHubAsset>,
 }
 
 #[tauri::command]
@@ -605,13 +604,17 @@ async fn check_update() -> Result<UpdateInfo, String> {
 
     let has_update = version_compare(latest, current);
 
-    // 查找便携版或安装包下载链接
-    let (download_url, download_size) = release
+    // 过滤出 Windows 相关的下载资源
+    let assets: Vec<GitHubAsset> = release
         .assets
         .iter()
-        .find(|a| a.name.ends_with("-portable.exe") || a.name.ends_with("-setup.exe"))
-        .map(|a| (Some(a.browser_download_url.clone()), Some(a.size)))
-        .unwrap_or((None, None));
+        .filter(|a| {
+            a.name.ends_with("-portable.exe")
+                || a.name.ends_with("-setup.exe")
+                || a.name.ends_with(".msi")
+        })
+        .cloned()
+        .collect();
 
     Ok(UpdateInfo {
         has_update,
@@ -621,8 +624,7 @@ async fn check_update() -> Result<UpdateInfo, String> {
         release_name: release.name,
         release_notes: release.body.unwrap_or_default(),
         published_at: release.published_at,
-        download_url,
-        download_size,
+        assets,
     })
 }
 
diff --git a/src-tauri/tauri.conf.json b/src-tauri/tauri.conf.json
index 6186fff..6159fb8 100644
--- a/src-tauri/tauri.conf.json
+++ b/src-tauri/tauri.conf.json
@@ -1,7 +1,7 @@
 {
   "$schema": "https://schema.tauri.app/config/2",
   "productName": "UPX-Tools",
-  "version": "1.3.0",
+  "version": "1.4.5",
   "identifier": "top.aslant.upxgui",
   "build": {
     "beforeDevCommand": "",
diff --git a/ui/index.html b/ui/index.html
index 491d474..cd5a954 100644
--- a/ui/index.html
+++ b/ui/index.html
@@ -390,7 +390,7 @@
             class="hidden fixed inset-0 bg-foreground/80 flex items-center justify-center z-50 backdrop-blur-sm modal-backdrop"
         >
             <div class="card p-6 w-full mx-4 modal-content" style="max-width: 480px">
-                <div class="flex items-center gap-3 mb-4">
+                <div class="flex items-center gap-3 mb-5">
                     <div
                         class="w-10 h-10 rounded-full bg-green-500/10 flex items-center justify-center"
                     >
@@ -414,15 +414,23 @@
                     </div>
                 </div>
 
-                <div class="flex items-center justify-between mb-2">
+                <div class="flex items-center justify-between mb-3">
                     <h3 class="text-sm font-medium text-foreground">更新内容</h3>
                     <span id="update-date" class="text-xs text-muted-foreground"></span>
                 </div>
-                <div class="bg-muted p-4 rounded-md max-h-32 overflow-y-auto">
+                <div class="bg-muted p-4 rounded-md max-h-32 overflow-y-auto mb-5">
                     <div id="update-notes" class="text-sm text-muted-foreground space-y-1"></div>
                 </div>
 
-                <div id="update-progress" class="hidden mt-6">
+                <!-- 下载选项 -->
+                <div class="space-y-3 mb-5">
+                    <h4 class="text-sm font-medium text-foreground">选择下载版本</h4>
+                    <div id="download-options" class="grid grid-cols-2 gap-4">
+                        <!-- 动态填充下载选项 -->
+                    </div>
+                </div>
+
+                <div id="update-progress" class="hidden">
                     <div class="flex items-center gap-3">
                         <div class="flex-1 h-2 bg-border rounded-full overflow-hidden">
                             <div
@@ -437,19 +445,13 @@
                     </div>
                 </div>
 
-                <div class="flex gap-3 mt-6">
+                <div class="flex mt-6">
                     <button
                         id="update-later-btn"
-                        class="btn btn-ghost flex-1 py-2.5 px-6 text-sm rounded-sm"
+                        class="btn btn-outline w-full py-2.5 px-6 text-sm rounded-sm"
                     >
                         稍后更新
                     </button>
-                    <button
-                        id="update-now-btn"
-                        class="btn btn-primary flex-1 py-2.5 px-6 text-sm rounded-sm"
-                    >
-                        立即更新
-                    </button>
                 </div>
             </div>
         </div>
diff --git a/ui/js/main.js b/ui/js/main.js
index 8e5c1be..922eb9b 100644
--- a/ui/js/main.js
+++ b/ui/js/main.js
@@ -600,10 +600,10 @@ let updateModal,
     updateProgressText,
     updateProgressBar,
     updateLaterBtn,
-    updateNowBtn
+    downloadOptions
 
 // 当前更新信息缓存
-let currentUpdateInfo = null
+let currentUpdateInfo_ = null
 
 // 初始化更新弹窗元素和事件
 function initUpdateModal() {
@@ -615,10 +615,9 @@ function initUpdateModal() {
     updateProgressText = $('update-progress-text')
     updateProgressBar = $('update-progress-bar')
     updateLaterBtn = $('update-later-btn')
-    updateNowBtn = $('update-now-btn')
+    downloadOptions = $('download-options')
 
     updateLaterBtn?.addEventListener('click', hideUpdateModal)
-    updateNowBtn?.addEventListener('click', handleDownloadUpdate)
     updateModal?.addEventListener('click', (e) => {
         if (e.target === updateModal) hideUpdateModal()
     })
@@ -634,7 +633,7 @@ async function handleCheckUpdate() {
 
         if (updateInfo.has_update) {
             addLog(`发现新版本: ${updateInfo.latest_version}`, 'success', true)
-            currentUpdateInfo = updateInfo
+            currentUpdateInfo_ = updateInfo
             showUpdateModal(updateInfo)
         } else {
             addLog(`当前已是最新版本 (${updateInfo.current_version})`, 'success')
@@ -712,43 +711,70 @@ function showUpdateModal(info) {
     updateDate.textContent = `发布于 ${formatDate(info.published_at)}`
     updateNotes.innerHTML = renderMarkdown(info.release_notes)
 
-    // 重置进度条和按钮状态
+    // 重置进度条状态
     updateProgress.classList.add('hidden')
     updateProgressBar.style.width = '0%'
     updateProgressText.textContent = '0%'
-    updateNowBtn.disabled = false
-    updateNowBtn.textContent = info.download_url ? '立即更新' : '前往下载'
-    updateLaterBtn.disabled = false
+
+    // 渲染下载选项
+    renderDownloadOptions(info.assets)
 
     showModal(updateModal)
 }
 
-const hideUpdateModal = () => hideModal(updateModal)
+// 渲染下载选项
+function renderDownloadOptions(assets) {
+    if (!downloadOptions) return
 
-// 下载并安装更新
-async function handleDownloadUpdate() {
-    if (!currentUpdateInfo) return
-
-    // 如果没有直接下载链接，打开浏览器
-    if (!currentUpdateInfo.download_url) {
-        try {
-            const { open } = window.__TAURI__.shell
-            await open(currentUpdateInfo.release_url)
-            addLog('已在浏览器中打开下载页面', 'success')
-            hideUpdateModal()
-        } catch (e) {
-            addLog(`打开链接失败: ${e}`, 'error')
-        }
-        return
+    const optionLabels = {
+        'portable.exe': '便携版',
+        'setup.exe': '安装版',
     }
 
+    downloadOptions.innerHTML = assets
+        .filter((asset) => {
+            // 只显示便携版和安装版
+            return asset.name.includes('portable.exe') || asset.name.includes('setup.exe')
+        })
+        .map((asset) => {
+            const label =
+                Object.entries(optionLabels).find(([key]) => asset.name.includes(key))?.[1] ||
+                asset.name
+
+            return `
+                <button
+                    class="download-option-btn btn btn-outline py-2.5 px-4 text-sm rounded-sm"
+                    data-url="${asset.browser_download_url}"
+                    data-filename="${asset.name}"
+                >
+                    ${label}
+                </button>
+            `
+        })
+        .join('')
+
+    // 绑定点击事件
+    downloadOptions.querySelectorAll('.download-option-btn').forEach((btn) => {
+        btn.addEventListener('click', handleDownloadOption)
+    })
+}
+
+// 下载选中的版本
+async function handleDownloadOption(e) {
+    const url = e.target.dataset.url
+    const filename = e.target.dataset.filename
+
+    if (!url) return
+
     try {
-        updateNowBtn.disabled = true
-        updateLaterBtn.disabled = true
-        updateNowBtn.textContent = '下载中...'
+        // 禁用所有下载按钮
+        downloadOptions
+            .querySelectorAll('.download-option-btn')
+            .forEach((btn) => (btn.disabled = true))
+
         updateProgress.classList.remove('hidden')
 
-        // 模拟进度（因为无法获取真实进度）
+        // 模拟进度
         let progress = 0
         const progressInterval = setInterval(() => {
             progress += Math.random() * 15
@@ -757,13 +783,10 @@ async function handleDownloadUpdate() {
             updateProgressText.textContent = `${Math.round(progress)}%`
         }, 200)
 
-        // 从 URL 提取文件名
-        const filename = currentUpdateInfo.download_url.split('/').pop() || 'UPX-Tools-setup.exe'
-
         addLog(`正在下载: ${filename}`, 'info')
         const filePath = await invoke('download_and_install', {
-            url: currentUpdateInfo.download_url,
-            filename: filename,
+            url,
+            filename,
         })
 
         clearInterval(progressInterval)
@@ -773,19 +796,21 @@ async function handleDownloadUpdate() {
         addLog(`下载完成: ${filePath}`, 'success')
         addLog('正在启动安装程序...', 'info')
 
-        // 短暂延迟后关闭弹窗
         setTimeout(() => {
             hideUpdateModal()
             addLog('安装程序已启动，请按提示完成安装', 'success', true)
         }, 1000)
     } catch (error) {
         addLog(`下载失败: ${error}`, 'error')
-        updateNowBtn.disabled = false
-        updateLaterBtn.disabled = false
-        updateNowBtn.textContent = '重试'
+        // 恢复按钮状态
+        downloadOptions
+            .querySelectorAll('.download-option-btn')
+            .forEach((btn) => (btn.disabled = false))
     }
 }
 
+const hideUpdateModal = () => hideModal(updateModal)
+
 // 格式化日期
 function formatDate(isoString) {
     try {