diff --git a/scripts/DL_Diag.bat b/scripts/DL_Diag.bat
index 5d61836..94b8e11 100644
--- a/scripts/DL_Diag.bat
+++ b/scripts/DL_Diag.bat
@@ -2,13 +2,20 @@
 setlocal
 
 set "script_name=DL_Diag.ps1"
-set "raw_url=https://raw.githubusercontent.com/SpotX-Official/SpotX/refs/heads/main/scripts/%script_name%"
-set "mirror_url=https://spotx-official.github.io/SpotX/scripts/%script_name%"
-set "temp_script=%TEMP%\%script_name%"
+set "branch_name=dl-diag-scripts"
+set "script_dir=%~dp0"
+set "local_script=%script_dir%%script_name%"
+set "branch_url=https://raw.githubusercontent.com/SpotX-Official/SpotX/refs/heads/%branch_name%/scripts/%script_name%"
+set "main_url=https://raw.githubusercontent.com/SpotX-Official/SpotX/refs/heads/main/scripts/%script_name%"
+set "temp_script=%TEMP%\SpotX-%script_name%"
 set "ps=%SYSTEMROOT%\System32\WindowsPowerShell\v1.0\powershell.exe"
 
-%ps% -NoProfile -ExecutionPolicy Bypass ^
--Command "[Net.ServicePointManager]::SecurityProtocol = [Net.ServicePointManager]::SecurityProtocol -bor [Net.SecurityProtocolType]::Tls12; $raw='%raw_url%'; $mirror='%mirror_url%'; $out='%temp_script%'; try { Invoke-WebRequest -UseBasicParsing -Uri $raw -OutFile $out -ErrorAction Stop } catch { Invoke-WebRequest -UseBasicParsing -Uri $mirror -OutFile $out -ErrorAction Stop }; & $out"
+if exist "%local_script%" (
+    %ps% -NoProfile -ExecutionPolicy Bypass -File "%local_script%"
+) else (
+    %ps% -NoProfile -ExecutionPolicy Bypass ^
+    -Command "[Net.ServicePointManager]::SecurityProtocol = [Net.ServicePointManager]::SecurityProtocol -bor [Net.SecurityProtocolType]::Tls12; $out='%temp_script%'; $urls=@('%branch_url%','%main_url%'); $downloaded=$false; foreach ($url in $urls) { try { Invoke-WebRequest -UseBasicParsing -Uri $url -OutFile $out -ErrorAction Stop; $downloaded=$true; break } catch {} }; if (-not $downloaded) { throw 'Failed to download diagnostic script' }; & $out"
+)
 
 pause
 endlocal