revert back to 21H1

Start-Windows10UpdateAssistant.ps1

@@ -2,13 +2,13 @@
 If ( IsWindowsVersion -ge "10.0" ) {
 
     ## Make sure the endpoint isn't already running the version we're installing
-    If ( IsWindowsBuild -lt 19044 ) {
+    If ( IsWindowsBuild -lt 19043 ) {
         
         ## Set the directory where the Windows Update Assistant will be downloaded to
         $DOWNLOADS = $Env:TEMP
 
         ## URL to the Windows Update Assistant
-        $URL = 'https://download.microsoft.com/download/f/1/9/f19ea9d5-1b5f-4a4d-9f50-04cbf63dc9c6/Windows10Upgrade9252.exe'
+        $URL = 'https://download.microsoft.com/download/3/0/1/301147e7-e3d3-467e-a9eb-003a72840887/Windows10Upgrade9252.exe'
 
         ## Uninstall previous Windows 10 Update Assistant
         If ( Test-Path "${Env:SystemDrive}\Windows10Upgrade\Windows10UpgraderApp.exe" )