diff --git a/.gitignore b/.gitignore
index e506c96..a152d2b 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,4 +1,5 @@
 *.exe
 Data/
+App/AppInfo/pac_installer_log.ini
 App/Git
 Download
diff --git a/App/AppInfo/update.ini b/App/AppInfo/update.ini
index d1f7905..b49fa20 100644
--- a/App/AppInfo/update.ini
+++ b/App/AppInfo/update.ini
@@ -4,6 +4,6 @@ Display = 2.27.0-beta4-uroesch
 
 [Archive]
 URL1         = https://github.com/git-for-windows/git/releases/download/v2.27.0.windows.1/PortableGit-2.27.0-32-bit.7z.exe 
-Checksum1    = SHA256:8cbe1e3b57eb9d02e92cff12089454f2cf090c02958080d62e199ef8764542d3
+Checksum1    = SHA256::8cbe1e3b57eb9d02e92cff12089454f2cf090c02958080d62e199ef8764542d3
 TargetName1  = Git
 ExtractName1 = 
diff --git a/Other/Update/PA-Upgrade.ps1 b/Other/Update/PA-Upgrade.ps1
index 3c54732..61cfa08 100644
--- a/Other/Update/PA-Upgrade.ps1
+++ b/Other/Update/PA-Upgrade.ps1
@@ -11,7 +11,7 @@ Using module ".\PortableAppsCommon.psm1"
 # -----------------------------------------------------------------------------
 # Globals
 # -----------------------------------------------------------------------------
-$Version    = "0.0.2-alpha"
+$Version    = "0.0.3-alpha"
 $Debug      = $True
 $SiteUrl    = "https://github.com"
 $ReleaseUrl = "$SiteUrl/uroesch/$AppName/releases/"
@@ -79,24 +79,21 @@ Function Invoke-Installer() {
   param(
     [string] $Command
   )
+  Set-Location "$AppRoot\.."
+  $PARoot    = (Get-Location)
+  $Arguments = "/AUTOCLOSE=true " +
+               "/DESTINATION=""$(ConvertTo-WindowsPath $PARoot)\\"""
   #  Addtional Switches for paf.exe
   #  /HIDEINSTALLER=true
   #  /SILENT=true
 
   Switch (Test-Unix) {
     $True   {
-      Set-Location "$AppRoot\.."
-      $PARoot    = (Get-Location)
-      $Arguments = "/SILENT=true /AUTOCLOSE=true /DESTINATION=""$(ConvertTo-WindowsPath $PARoot)\\"""
       $Arguments = "$Command $Arguments"
       $Command   = "wine"
       break
     }
-    default {
-      Set-Location "$AppRoot"
-      $AppRoot    = (Get-Location)
-      $Arguments = "/AUTOCLOSE=true /DESTINATION=""$(ConvertTo-WindowsPath $AppRoot)"""
-    }
+    default { }
   }
 
   Debug info "Run PA $Command $Arguments"
diff --git a/Other/Update/PortableAppsCommon.psm1 b/Other/Update/PortableAppsCommon.psm1
index d3e4a5b..1197af5 100644
--- a/Other/Update/PortableAppsCommon.psm1
+++ b/Other/Update/PortableAppsCommon.psm1
@@ -10,6 +10,7 @@
 $AppRoot        = $(Convert-Path "$PSScriptRoot\..\..")
 $AppName        = (Get-Item $AppRoot).Basename
 $AppDir         = "$AppRoot\App"
+$DownloadDir    = "$AppRoot\Download"
 $AppInfoDir     = "$AppDir\AppInfo"
 $AppInfoIni     = "$AppInfoDir\appinfo.ini"
 $UpdateIni      = "$AppInfoDir\update.ini"
@@ -191,6 +192,25 @@ Function Debug() {
   Write-Host $Message.Replace($(Switch-Path "$AppRoot\"), '')
 }
 
+# -----------------------------------------------------------------------------
+Function Download-Checksum() {
+  Param(
+    [String] $Uri
+  )
+  Try {
+    $OutFile = $DownloadDir + "\" + ($Uri.split('/'))[-1]
+    Invoke-WebRequest `
+      -Uri $Uri `
+      -OutFile $OutFile
+   $Sum = (Get-Content -Path $OutFile)
+   Return $Sum
+  }
+  Catch {
+    Debug error "Unable to download checksum from URL '$Uri'"
+    Exit 124
+  }
+}
+
 # -----------------------------------------------------------------------------
 Function Compare-Checksum {
   param(
@@ -198,7 +218,11 @@ Function Compare-Checksum {
     [string] $Checksum
   )
 
-  ($Algorithm, $Sum) = $Checksum.Split(':')
+  ($Algorithm, $Sum) = $Checksum.Split('::')
+  If ($Sum -like 'http*') {
+    $Sum = Download-Checksum -Uri $Sum
+    $Checksum = $Algorithm + "::" + $Sum
+  }
   $Result = Get-Checksum -Path $Path -Algorithm $Algorithm
   Debug info "Checksum of INI ($($Checksum.ToUpper())) and download ($Result)"
   return ($Checksum.ToUpper() -eq $Result)
@@ -206,12 +230,12 @@ Function Compare-Checksum {
 
 # -----------------------------------------------------------------------------
 Function Get-Checksum {
-  param(
+  Param(
     [string] $Path,
     [string] $Algorithm
   )
   $Hash = (Get-FileHash -Path $Path -Algorithm $Algorithm).Hash
-  Return ($Algorithm + ":" + $Hash).ToUpper()
+  Return ($Algorithm + "::" + $Hash).ToUpper()
 }
 
 # -----------------------------------------------------------------------------