diff --git a/Changelog.md b/Changelog.md
index c8d4906..01eff1b 100644
--- a/Changelog.md
+++ b/Changelog.md
@@ -5,6 +5,13 @@
 
 
 
+5.4.6.0
+=======
+
+- youtube-dl update
+- auto update routine fix
+
+
 5.4.5.1 Beta
 ============
 
diff --git a/mpv.net/Misc/Misc.cs b/mpv.net/Misc/Misc.cs
index 3f7a8f0..f69551a 100644
--- a/mpv.net/Misc/Misc.cs
+++ b/mpv.net/Misc/Misc.cs
@@ -229,4 +229,4 @@ namespace mpvnet
     {
         public static string Startup { get; } = Application.StartupPath + @"\";
     }
-}
\ No newline at end of file
+}
diff --git a/mpv.net/Properties/AssemblyInfo.cs b/mpv.net/Properties/AssemblyInfo.cs
index 951b8ee..a332e54 100644
--- a/mpv.net/Properties/AssemblyInfo.cs
+++ b/mpv.net/Properties/AssemblyInfo.cs
@@ -32,5 +32,5 @@ using System.Runtime.InteropServices;
 // You can specify all the values or you can default the Build and Revision Numbers 
 // by using the '*' as shown below:
 // [assembly: AssemblyVersion("1.0.*")]
-[assembly: AssemblyVersion("5.4.5.1")]
-[assembly: AssemblyFileVersion("5.4.5.1")]
+[assembly: AssemblyVersion("5.4.6.0")]
+[assembly: AssemblyFileVersion("5.4.6.0")]
diff --git a/mpv.net/Update.ps1 b/mpv.net/Update.ps1
index 1a55a9e..c195df7 100644
--- a/mpv.net/Update.ps1
+++ b/mpv.net/Update.ps1
@@ -1,23 +1,67 @@
 
 $ErrorActionPreference = 'Stop'
-$targetDir = (Split-Path $args[1]) + "\new version"
+
+if ($args.Length -ne 2) {
+    Write-Host 'Invalid arguments' -ForegroundColor Red
+    exit
+}
+
+if (-not (Get-Command curl.exe)) {
+    Write-Host 'Error using curl.exe' -ForegroundColor Red
+    exit
+}
+
+if ($PSVersionTable.PSVersion.Major -lt 5) {
+    Write-Host 'PowerShell 5.1 not found' -ForegroundColor Red
+    exit
+}
+
+Add-Type -AssemblyName Microsoft.VisualBasic
+
+# Delete directory using recycle bin
+function Remove-Directory($directory) {
+    if (Test-Path $directory) {
+        [Microsoft.VisualBasic.FileIO.FileSystem]::
+            DeleteDirectory($directory, 'OnlyErrorDialogs', 'SendToRecycleBin')
+    }
+}
+
+$currentDir = $args[1];
+
+$targetDir = (Split-Path $currentDir) + "\new version"
+Remove-Directory $targetDir
 $targetFile = $targetDir + '.7z'
+Remove-Item $targetFile -Force -ErrorAction Ignore
 
 Write-Host 'Download new version' -ForegroundColor Green
 curl.exe $args[0] --location --output $targetFile
 if ($LastExitCode) { throw $LastExitCode }
 
 Write-Host 'Unpack new version' -ForegroundColor Green
-& ($args[1] + '\7z\7za.exe') x -y $targetFile -o"$targetDir"
+& ($currentDir + '\7z\7za.exe') x -y $targetFile -o"$targetDir"
 if ($LastExitCode) { throw $LastExitCode }
 
 Write-Host 'Delete downloaded file' -ForegroundColor Green
 Remove-Item $targetFile -Force -Recurse
 
+$portableConfigDir = $currentDir + '\portable_config'
+$portableConfigTempDir = (Split-Path $currentDir) + '\portable config dir temp'
+Remove-Item $portableConfigTempDir -Force -ErrorAction Ignore
+
+if (Test-Path $portableConfigDir) {
+    Write-Host 'Backup portable config' -ForegroundColor Green
+    Copy-Item $portableConfigDir $portableConfigTempDir -Recurse -Force
+}
+
 Write-Host 'Delete current version' -ForegroundColor Green
-Remove-Item $args[1] -Force -Recurse
+Remove-Directory $currentDir
 
 Write-Host 'Rename directory' -ForegroundColor Green
-Rename-Item $targetDir (Split-Path $args[1] -Leaf)
+Rename-Item $targetDir (Split-Path $currentDir -Leaf)
+
+if (Test-Path $portableConfigTempDir) {
+    Write-Host 'Restore portable config' -ForegroundColor Green
+    Move-Item $portableConfigTempDir $portableConfigDir -Force
+}
 
 Write-Host 'Update is complete' -ForegroundColor Green