diff --git a/Windows/CS/Framework4.0/Updater/src/main.rs b/Windows/CS/Framework4.0/Updater/src/main.rs
index bdf54ff..f7b1539 100644
--- a/Windows/CS/Framework4.0/Updater/src/main.rs
+++ b/Windows/CS/Framework4.0/Updater/src/main.rs
@@ -35,11 +35,22 @@ static DOWNLOAD_STATE: std::sync::Mutex<DownloadState> = std::sync::Mutex::new(D
 });
 
 // ===================== 版本比较与下载 =====================
+/// 获取 Updater 数据目录（X:\AppData\，存放 BootLoader.exe 等）
+fn get_updater_data_dir() -> PathBuf {
+    let exe_path = std::env::current_exe().expect("Failed to get executable path");
+    let drive = exe_path
+        .parent()
+        .and_then(|p| p.as_os_str().to_str())
+        .and_then(|s| s.split('\\').next())
+        .unwrap_or("C:");
+    let appdata = PathBuf::from(format!("{}/AppData", drive));
+    let _ = fs::create_dir_all(&appdata);
+    appdata
+}
+
 /// 获取本地文件版本号（使用 PowerShell 获取 PE 文件版本信息）
 fn get_local_file_version(filename: &str) -> String {
-    let exe_path = std::env::current_exe().expect("Failed to get executable path");
-    let base_dir = exe_path.parent().unwrap_or(std::path::Path::new(""));
-    let file_path = base_dir.join(filename);
+    let file_path = get_updater_data_dir().join(filename);
 
     if !file_path.exists() {
         return "0.0.0".to_string();
@@ -141,10 +152,9 @@ fn handle_file_chunk(data: &serde_json::Map<std::string::String, serde_json::Val
             let _ = fs::remove_file(tp);
         }
 
-        // 获取可执行文件目录
-        let exe_path = std::env::current_exe().expect("Failed to get executable path");
-        let base_dir = exe_path.parent().unwrap_or(std::path::Path::new(""));
-        let temp_path = base_dir.join(format!("{}.tmp", filename));
+        // 使用 AppData/Updater/ 作为数据目录
+        let data_dir = get_updater_data_dir();
+        let temp_path = data_dir.join(format!("{}.tmp", filename));
 
         // 创建临时文件（截断）
         match File::create(&temp_path) {
@@ -205,9 +215,8 @@ fn handle_file_chunk(data: &serde_json::Map<std::string::String, serde_json::Val
         }
 
         if let Some(ref temp) = temp_path {
-            let exe_path = std::env::current_exe().expect("Failed to get executable path");
-            let base_dir = exe_path.parent().unwrap_or(std::path::Path::new(""));
-            let final_path = base_dir.join(filename);
+            let data_dir = get_updater_data_dir();
+            let final_path = data_dir.join(filename);
 
             // 原子重命名
             if let Err(e) = fs::rename(temp, &final_path) {
@@ -266,16 +275,7 @@ impl Default for Config {
 
 /// 获取 Updater 自身配置路径 AppData/Updater/config.json
 fn get_updater_config_path() -> PathBuf {
-    let exe_path = std::env::current_exe().expect("Failed to get executable path");
-    let drive = exe_path
-        .parent()
-        .and_then(|p| p.as_os_str().to_str())
-        .and_then(|s| s.split('\\').next())
-        .unwrap_or("C:");
-    let appdata = PathBuf::from(format!("{}/AppData", drive));
-    let updater_dir = appdata.join("Updater");
-    let _ = fs::create_dir_all(&updater_dir);
-    updater_dir.join("config.json")
+    get_updater_data_dir().join("Updater").join("config.json")
 }
 
 /// 获取公共配置路径 AppData/config.json（与 BootLoader 同级）