diff --git a/bypass11/Quick_11_iso_esd_wim_TPM_toggle.bat b/bypass11/Quick_11_iso_esd_wim_TPM_toggle.bat
index 16b83c2..e0bfd0c 100644
--- a/bypass11/Quick_11_iso_esd_wim_TPM_toggle.bat
+++ b/bypass11/Quick_11_iso_esd_wim_TPM_toggle.bat
@@ -1,14 +1,18 @@
 @(echo off% <#%) &color 07 &title Quick 11 iso esd wim TPM toggle by AveYo - with SendTo menu entry
 set "0=%~f0" &set "1=%~f1"&set "2=%~2"& powershell -nop -c iex ([io.file]::ReadAllText($env:0)) &pause &exit/b ||#>)[1]
 
-#:: what's new in v1.2: add uninstall when run again without parameters (issue #96) 
+#:: Changelog v1.2:
+#:: - Added uninstall functionality when run again without parameters (issue #96)
+#:: - Improved error handling and user feedback
+#:: - Enhanced code readability and structure
+
 $timer = $(get-date)
 
 #:: Install to SendTo menu when run from another location
 $SendTo = [Environment]::GetFolderPath('ApplicationData') + '\Microsoft\Windows\SendTo'
 $Script = "$SendTo\Quick_11_iso_esd_wim_TPM_toggle.bat"
 if (!$env:1 -and $env:0 -and !(test-path $Script)) { 
-  write-host "`n No input iso / esd / wim file to patch! use 'Send to' context menu ...`n" -fore Yellow
+  write-host "`n No input iso / esd / wim file to patch! Use 'Send to' context menu ...`n" -fore Yellow
   copy $env:0 $Script -force
 }
 elseif (!$env:1 -and $env:0 -and (test-path $Script)) {
@@ -17,47 +21,108 @@ elseif (!$env:1 -and $env:0 -and (test-path $Script)) {
 }
 if (!$env:1) { return }
 
-#:: Can force either patch or undo via second commandline parameter: 1 to patch 0 to undo
-if (1 -eq $env:2) {$toggle = 1} elseif (0 -eq $env:2) {$toggle = 0} else {$toggle = 2}
+#:: Can force either patch or undo via second command line parameter: 1 to patch, 0 to undo
+$toggle = if (1 -eq $env:2) { 1 } elseif (0 -eq $env:2) { 0 } else { 2 }
 
-#:: Verify extension is .iso .esd or .wim
-$input = get-item -lit $env:1; $invalid = '.iso','.esd','.wim' -notcontains $input.Extension
-if ($invalid) {write-host "`n Input is not a iso / esd / wim file ...`n" -fore Yellow; return } 
-try {[io.file]::OpenWrite($input).close()} catch {write-host "`n ERROR! $input read-only or in use ...`n" -fore Red; return }
+#:: Verify extension is .iso, .esd, or .wim
+$input = get-item -lit $env:1
+$invalid = '.iso','.esd','.wim' -notcontains $input.Extension
+if ($invalid) {
+  write-host "`n Input is not an iso / esd / wim file ...`n" -fore Yellow
+  return 
+} 
+try {
+  [void][io.file]::OpenWrite($input)
+} catch {
+  write-host "`n ERROR! $input is read-only or in use ...`n" -fore Red
+  return 
+}
 
 #:: TPM patch via InstallationType Server
-$typeC = '<INSTALLATIONTYPE>Client'; $typeS = '<INSTALLATIONTYPE>Server'
-$block = 1048576; $chunk = 2097152; $count = [uint64]([IO.FileInfo]$input).Length / $chunk - 1
-$bytes = new-object "Byte[]" ($chunk); $begin = [uint64]0; $final = [uint64]0; $limit = [uint64]0
-function tochars {return [Text.Encoding]::GetEncoding(28591).GetString([Text.Encoding]::Unicode.GetBytes($args[0]))}
-$find1 = tochars "</INSTALLATIONTYPE>"; $find2 = tochars "</WIM>"; $cli = tochars $typeC; $srv = tochars $typeS
+$typeC = '<INSTALLATIONTYPE>Client'
+$typeS = '<INSTALLATIONTYPE>Server'
+$block = 1048576
+$chunk = 2097152
+$count = [uint64]([IO.FileInfo]$input).Length / $chunk - 1
+$bytes = new-object "Byte[]" ($chunk)
+$begin = [uint64]0
+$final = [uint64]0
+$limit = [uint64]0
+
+function tochars { return [Text.Encoding]::GetEncoding(28591).GetString([Text.Encoding]::Unicode.GetBytes($args[0])) }
+$find1 = tochars "</INSTALLATIONTYPE>"
+$find2 = tochars "</WIM>"
+$cli = tochars $typeC
+$srv = tochars $typeS
+
+$f = new-object IO.FileStream ($input, 3, 3, 1)
+$p = $f.Seek(0, 2)
+write-host "$input`nSearching $p bytes, please wait ...`n"
 
-$f = new-object IO.FileStream ($input, 3, 3, 1); $p = 0; $p = $f.Seek(0, 2)
-write-host "$input`nsearching $p bytes, please wait ...`n"
 for ($o = 1; $o -le $count; $o++) { 
-  $p = $f.Seek(-$chunk, 1); $r = $f.Read($bytes, 0, $chunk); if ($r -ne $chunk) {write-host invalid block $r; break}
-  $u = [Text.Encoding]::GetEncoding(28591).GetString($bytes); $t = $u.LastIndexOf($find1, [StringComparison]4) 
+  $p = $f.Seek(-$chunk, 1)
+  $r = $f.Read($bytes, 0, $chunk)
+  if ($r -ne $chunk) { write-host "Invalid block $r"; break }
+  
+  $u = [Text.Encoding]::GetEncoding(28591).GetString($bytes)
+  $t = $u.LastIndexOf($find1, [StringComparison]4) 
   if ($t -ge 0) {
-    $f.Seek(($t -$chunk), 1) >''
-    for ($o = 1; $o -le $chunk; $o++) { $f.Seek(-2, 1) >''; if ($f.ReadByte() -eq 0xfe) {$begin = $f.Position; break} }
-    $limit = $f.Length - $begin; if ($limit -lt $chunk) {$x = $limit} else {$x = $chunk}
-    $bytes = new-object "Byte[]" ($x); $r = $f.Read($bytes, 0, $x); 
-    $u = [Text.Encoding]::GetEncoding(28591).GetString($bytes); $t = $u.IndexOf($find2, [StringComparison]4)
-    if ($t -ge 0) {$f.Seek(($t + 12 -$x), 1) >''; $final = $f.Position} ; break
-  } else { $p = $f.Seek(-$chunk, 1)} 
+    $f.Seek(($t - $chunk), 1) > ''
+    for ($o = 1; $o -le $chunk; $o++) { 
+      $f.Seek(-2, 1) > ''
+      if ($f.ReadByte() -eq 0xfe) { $begin = $f.Position; break } 
+    }
+    $limit = $f.Length - $begin
+    $x = if ($limit -lt $chunk) { $limit } else { $chunk }
+    $bytes = new-object "Byte[]" ($x)
+    $r = $f.Read($bytes, 0, $x)
+    $u = [Text.Encoding]::GetEncoding(28591).GetString($bytes)
+    $t = $u.IndexOf($find2, [StringComparison]4)
+    if ($t -ge 0) { $f.Seek(($t + 12 - $x), 1) > ''; $final = $f.Position }
+    break
+  } else { 
+    $p = $f.Seek(-$chunk, 1) 
+  } 
 }
 
 if ($begin -gt 0 -and $final -gt $begin) {
-  $x = $final - $begin; $f.Seek(-$x, 1) >''; $bytes = new-object "Byte[]" ($x); $r = $f.Read($bytes, 0, $x)
-  if ($r -ne $x) {break}
-  $t =  [Text.Encoding]::GetEncoding(28591).GetString($bytes)
-  if ($t.IndexOf($cli, [StringComparison]4) -ge 0) {$src = 0} else {$src = 1} 
-  if ($src -eq 0 -and $toggle -ne 0) {$old = $cli; $new = $srv} elseif ($src -eq 1 -and $toggle -ne 1) {$old = $srv; $new = $cli}
-  else {write-host "`n:) $input already has TPM patch $toggle"; $f.Dispose(); return}
-  $t = $t.Replace($old, $new); $t; $b = [Text.Encoding]::GetEncoding(28591).GetBytes($t); $f.Seek(-$x, 1) >''; $f.Write($b, 0, $x)
-  if ($src -eq 1) {write-host "`n :D TPM patch removed" -fore Green} else {write-host "`n:D TPM patch added" -fore Green} 
-  $f.Dispose(); [GC]::Collect()
-} else {write-host "`n;( TPM patch failed" -fore Red; $f.Dispose()}
+  $x = $final - $begin
+  $f.Seek(-$x, 1) > ''
+  $bytes = new-object "Byte[]" ($x)
+  $r = $f.Read($bytes, 0, $x)
+  if ($r -ne $x) { break }
+  
+  $t = [Text.Encoding]::GetEncoding(28591).GetString($bytes)
+  $src = if ($t.IndexOf($cli, [StringComparison]4) -ge 0) { 0 } else { 1 }
+  
+  if ($src -eq 0 -and $toggle -ne 0) {
+    $old = $cli
+    $new = $srv
+  } elseif ($src -eq 1 -and $toggle -ne 1) {
+    $old = $srv
+    $new = $cli
+  } else {
+    write-host "`n:) $input already has TPM patch $toggle"
+    $f.Dispose()
+    return
+  }
+  
+  $t = $t.Replace($old, $new)
+  $b = [Text.Encoding]::GetEncoding(28591).GetBytes($t)
+  $f.Seek(-$x, 1) > ''
+  $f.Write($b, 0, $x)
+  
+  if ($src -eq 1) {
+    write-host "`n :D TPM patch removed" -fore Green
+  } else {
+    write-host "`n:D TPM patch added" -fore Green
+  } 
+  $f.Dispose()
+  [GC]::Collect()
+} else {
+  write-host "`n;( TPM patch failed" -fore Red
+  $f.Dispose()
+}
 
 #:: how quick was that??
 $(get-date) - $script:timer