USB Enable Selective Suspend

<#
Disable-FTDI-SelectiveSuspend-OnlyIfMissing-NoPortName.ps1
Only creates selective-suspend properties if they do not already exist.
Does NOT change PortName. Reboots only if it created at least one property
(unless -WhatIf or -NoReboot is used). Run as Administrator.
#> param( [switch]$WhatIf, [switch]$NoReboot) # Ensure elevated
if (-not ([Security.Principal.WindowsPrincipal] [Security.Principal.WindowsIdentity]::GetCurrent.IsInRole([Security.Principal.WindowsBuiltinRole]::Administrator) { Write-Error "This script must be run as Administrator. Exiting." exit 1
} $timestamp = (Get-Date).ToString('yyyyMMdd_HHmmss')
$logFile = Join-Path $env:USERPROFILE ("Desktop\FTDI_ApplyIfMissing_$timestamp.log")
"Started: $(Get-Date -Format u)" | Out-File -FilePath $logFile -Encoding UTF8 # Loose regex to detect existing serial-enumerator-like property names (we do NOT create arbitrary vendor names)
$serialEnumRegex = '(serial.*enum|enum.*serial|serialenumerator|enable.*serial)' $changedCount = 0
$errors = @ # Find FTDI COM ports
$ports = Get-PnpDevice -Class Ports -PresentOnly -ErrorAction SilentlyContinue | Where-Object { ($_.Manufacturer -and $_.Manufacturer -like '*FTDI*') -or ($_.InstanceId -and $_.InstanceId -match 'VID_0403') } if (-not $ports -or $ports.Count -eq 0) { "No FTDI COM ports found." | Tee-Object -FilePath $logFile -Append Write-Output "No FTDI COM ports found. See log: $logFile" exit 0
} "Found $($ports.Count) FTDI COM port(s)." | Tee-Object -FilePath $logFile -Append foreach ($p in $ports) { "----" | Tee-Object -FilePath $logFile -Append "Device: $($p.FriendlyName)" | Tee-Object -FilePath $logFile -Append "InstanceId: $($p.InstanceId)" | Tee-Object -FilePath $logFile -Append $inst = $p.InstanceId if ([string]::IsNullOrWhiteSpace($inst) { "InstanceId empty; skipping." | Tee-Object -FilePath $logFile -Append continue } # Build safe Enum base path $enumBase = 'HKLM:\SYSTEM\CurrentControlSet\Enum' $parts = $inst -split '\\' $subpath = [string]($parts -join '\') $regPathBase = Join-Path $enumBase $subpath # Candidate Device Parameters locations $dpCandidates = @( Join-Path $regPathBase 'Device Parameters', Join-Path (Join-Path $regPathBase '0000') 'Device Parameters') $dpFound = $false foreach ($dp in $dpCandidates) { "Checking: $dp" | Tee-Object -FilePath $logFile -Append if (Test-Path $dp) { $dpFound = $true "Using Device Parameters: $dp" | Tee-Object -FilePath $logFile -Append # Properties to create only if missing $propsToEnsure = @{ 'DeviceIdleEnabled' = 0 'DefaultIdleState' = 0 'UserSetDeviceIdleEnabled' = 0 'SSIdleTimeout' = 0 } foreach ($kv in $propsToEnsure.GetEnumerator { $name = $kv.Key $desired = $kv.Value $exists = $false try { $exists = (Get-ItemProperty -Path $dp -Name $name -ErrorAction SilentlyContinue) -ne $null } catch { $exists = $false } if ($exists) { "$name exists at $dp — skipping creation." | Tee-Object -FilePath $logFile -Append } else { if ($WhatIf) { "WhatIf: would create $name = $desired at $dp" | Tee-Object -FilePath $logFile -Append $changedCount++ } else { try { New-Item -Path $dp -Force | Out-Null New-ItemProperty -Path $dp -Name $name -PropertyType DWord -Value $desired -Force -ErrorAction Stop | Out-Null "Created $name = $desired at $dp" | Tee-Object -FilePath $logFile -Append $changedCount++ } catch { "ERROR creating $name at $dp : $($_.Exception.Message)" | Tee-Object -FilePath $logFile -Append $errors += "ERROR creating $name at $dp : $($_.Exception.Message)" } } } } # For any existing properties that match serial-enum regex, set to 0 only if value missing (do NOT overwrite existing numeric values) try { $existingProps = (Get-ItemProperty -Path $dp -ErrorAction SilentlyContinue).PSObject.Properties | ForEach-Object { $_.Name } } catch { $existingProps = @ } foreach ($propName in $existingProps) { if ($propName -match $serialEnumRegex) { # If property exists with no value (null/empty), set to 0; otherwise do not overwrite try { $curVal = Get-ItemProperty -Path $dp -Name $propName -ErrorAction SilentlyContinue | Select-Object -ExpandProperty $propName -ErrorAction SilentlyContinue } catch { $curVal = $null } if ($null -eq $curVal) { if ($WhatIf) { "WhatIf: would set existing $propName = 0 at $dp" | Tee-Object -FilePath $logFile -Append $changedCount++ } else { try { New-ItemProperty -Path $dp -Name $propName -PropertyType DWord -Value 0 -Force -ErrorAction Stop | Out-Null "Set existing $propName = 0 at $dp" | Tee-Object -FilePath $logFile -Append $changedCount++ } catch { "ERROR writing $propName at $dp : $($_.Exception.Message)" | Tee-Object -FilePath $logFile -Append $errors += "ERROR writing $propName at $dp : $($_.Exception.Message)" } } } else { "$propName exists with value '$curVal' at $dp — not overwriting." | Tee-Object -FilePath $logFile -Append } } } break } else { "Not found: $dp" | Tee-Object -FilePath $logFile -Append } } if (-not $dpFound) { "Device Parameters key not found for instance $inst — skipped." | Tee-Object -FilePath $logFile -Append }
} # Summary
"=== Summary ===" | Tee-Object -FilePath $logFile -Append
"Properties created/updated count: $changedCount" | Tee-Object -FilePath $logFile -Append
if ($errors.Count -gt 0) { "Errors encountered: $($errors.Count)" | Tee-Object -FilePath $logFile -Append $errors | Tee-Object -FilePath $logFile -Append
} # Reboot if we created at least one property and not a dry-run and not suppressed
if (($changedCount -gt 0) -and (-not $WhatIf) -and (-not $NoReboot) { "Changes applied. Scheduling reboot in 15 seconds..." | Tee-Object -FilePath $logFile -Append Write-Output "Changes applied. Scheduling reboot in 15 seconds..." Start-Process -FilePath 'shutdown.exe' -ArgumentList @('/r','/t','15','/c','Applying FTDI Device Parameter changes') -NoNewWindow
} else { Write-Output "No reboot scheduled. See log: $logFile"
} "Completed: $(Get-Date -Format u)" | Tee-Object -FilePath $logFile -Append
Write-Output "Done. Log saved to: $logFile"

<#
Disable-FTDI-SelectiveSuspend-OnlyIfMissing-NoPortName.ps1
- Creates selective-suspend properties only if they do not already exist.
- Does NOT change PortName (COM number).
- Reboots only if at least one property was created (unless -WhatIf or -NoReboot is used). Run as Administrator.
#> param( [switch]$WhatIf, [switch]$NoReboot) # Ensure elevated
if (-not ([Security.Principal.WindowsPrincipal] [Security.Principal.WindowsIdentity]::GetCurrent.IsInRole([Security.Principal.WindowsBuiltinRole]::Administrator) { Write-Error "This script must be run as Administrator. Exiting." exit 1
} $timestamp = (Get-Date).ToString('yyyyMMdd_HHmmss')
$logFile = Join-Path $env:USERPROFILE ("Desktop\FTDI_ApplyIfMissing_$timestamp.log")
"Started: $(Get-Date -Format u)" | Out-File -FilePath $logFile -Encoding UTF8 # Loose regex to detect existing serial-enumerator-like property names (we do NOT create arbitrary vendor names)
$serialEnumRegex = '(serial.*enum|enum.*serial|serialenumerator|enable.*serial)' $changedCount = 0
$errors = @ # Find FTDI COM ports
$ports = Get-PnpDevice -Class Ports -PresentOnly -ErrorAction SilentlyContinue | Where-Object { ($_.Manufacturer -and $_.Manufacturer -like '*FTDI*') -or ($_.InstanceId -and $_.InstanceId -match 'VID_0403') } if (-not $ports -or $ports.Count -eq 0) { "No FTDI COM ports found." | Tee-Object -FilePath $logFile -Append Write-Output "No FTDI COM ports found. See log: $logFile" exit 0
} "Found $($ports.Count) FTDI COM port(s)." | Tee-Object -FilePath $logFile -Append foreach ($p in $ports) { "----" | Tee-Object -FilePath $logFile -Append "Device: $($p.FriendlyName)" | Tee-Object -FilePath $logFile -Append "InstanceId: $($p.InstanceId)" | Tee-Object -FilePath $logFile -Append $inst = $p.InstanceId if ([string]::IsNullOrWhiteSpace($inst) { "InstanceId empty; skipping." | Tee-Object -FilePath $logFile -Append continue } # Build safe Enum base path $enumBase = 'HKLM:\SYSTEM\CurrentControlSet\Enum' $parts = $inst -split '\\' $subpath = [string]($parts -join '\') $regPathBase = Join-Path $enumBase $subpath # Candidate Device Parameters locations $dpCandidates = @( Join-Path $regPathBase 'Device Parameters', Join-Path (Join-Path $regPathBase '0000') 'Device Parameters') $dpFound = $false foreach ($dp in $dpCandidates) { "Checking: $dp" | Tee-Object -FilePath $logFile -Append if (Test-Path $dp) { $dpFound = $true "Using Device Parameters: $dp" | Tee-Object -FilePath $logFile -Append # Properties to create only if missing $propsToEnsure = @{ 'DeviceIdleEnabled' = 0 'DefaultIdleState' = 0 'UserSetDeviceIdleEnabled' = 0 'SSIdleTimeout' = 0 } foreach ($kv in $propsToEnsure.GetEnumerator { $name = $kv.Key $desired = $kv.Value $exists = $false try { $exists = (Get-ItemProperty -Path $dp -Name $name -ErrorAction SilentlyContinue) -ne $null } catch { $exists = $false } if ($exists) { "$name exists at $dp - skipping creation." | Tee-Object -FilePath $logFile -Append } else { if ($WhatIf) { "WhatIf: would create $name = $desired at $dp" | Tee-Object -FilePath $logFile -Append $changedCount++ } else { try { New-Item -Path $dp -Force | Out-Null New-ItemProperty -Path $dp -Name $name -PropertyType DWord -Value $desired -Force -ErrorAction Stop | Out-Null "Created $name = $desired at $dp" | Tee-Object -FilePath $logFile -Append $changedCount++ } catch { "ERROR creating $name at $dp : $($_.Exception.Message)" | Tee-Object -FilePath $logFile -Append $errors += "ERROR creating $name at $dp : $($_.Exception.Message)" } } } } # For any existing properties that match serial-enum regex, set to 0 only if value missing (do NOT overwrite existing numeric values) try { $existingProps = (Get-ItemProperty -Path $dp -ErrorAction SilentlyContinue).PSObject.Properties | ForEach-Object { $_.Name } } catch { $existingProps = @ } foreach ($propName in $existingProps) { if ($propName -match $serialEnumRegex) { # If property exists with no value (null/empty), set to 0; otherwise do not overwrite try { $curVal = Get-ItemProperty -Path $dp -Name $propName -ErrorAction SilentlyContinue | Select-Object -ExpandProperty $propName -ErrorAction SilentlyContinue } catch { $curVal = $null } if ($null -eq $curVal) { if ($WhatIf) { "WhatIf: would set existing $propName = 0 at $dp" | Tee-Object -FilePath $logFile -Append $changedCount++ } else { try { New-ItemProperty -Path $dp -Name $propName -PropertyType DWord -Value 0 -Force -ErrorAction Stop | Out-Null "Set existing $propName = 0 at $dp" | Tee-Object -FilePath $logFile -Append $changedCount++ } catch { "ERROR writing $propName at $dp : $($_.Exception.Message)" | Tee-Object -FilePath $logFile -Append $errors += "ERROR writing $propName at $dp : $($_.Exception.Message)" } } } else { "$propName exists with value '$curVal' at $dp - not overwriting." | Tee-Object -FilePath $logFile -Append } } } break } else { "Not found: $dp" | Tee-Object -FilePath $logFile -Append } } if (-not $dpFound) { "Device Parameters key not found for instance $inst - skipped." | Tee-Object -FilePath $logFile -Append }
} # Summary
"=== Summary ===" | Tee-Object -FilePath $logFile -Append
"Properties created/updated count: $changedCount" | Tee-Object -FilePath $logFile -Append
if ($errors.Count -gt 0) { "Errors encountered: $($errors.Count)" | Tee-Object -FilePath $logFile -Append $errors | Tee-Object -FilePath $logFile -Append
} # Reboot if we created at least one property and not a dry-run and not suppressed
if (($changedCount -gt 0) -and (-not $WhatIf) -and (-not $NoReboot) { "Changes applied. Scheduling reboot in 15 seconds..." | Tee-Object -FilePath $logFile -Append Write-Output "Changes applied. Scheduling reboot in 15 seconds..." Start-Process -FilePath 'shutdown.exe' -ArgumentList @('/r','/t','15','/c','Applying FTDI Device Parameter changes') -NoNewWindow
} else { Write-Output "No reboot scheduled. See log: $logFile"
} "Completed: $(Get-Date -Format u)" | Tee-Object -FilePath $logFile -Append
Write-Output "Done. Log saved to: $logFile"

<#
Fix-FTDI-PortName-And-SelectiveSuspend.ps1
- Writes PortName (COMn) into each FTDI device's Device Parameters if missing (reads the real COM from Win32_SerialPort)
- Creates selective-suspend values only if missing: DeviceIdleEnabled, DefaultIdleState, UserSetDeviceIdleEnabled, SSIdleTimeout = 0
- Does NOT change COM assignments.
- Logs to Desktop and performs a device rescan at the end.
Run as Administrator.
#> param( [switch]$WhatIf, # dry-run: show what would be done, do not write [switch]$NoReboot # if you want to suppress reboot/rescan at end (script does a rescan by default) # require elevated
if (-not ([Security.Principal.WindowsPrincipal] [Security.Principal.WindowsIdentity]::GetCurrent.IsInRole([Security.Principal.WindowsBuiltinRole]::Administrator) { Write-Error "Run in an elevated PowerShell (Run as Administrator). Exiting." exit 1
} $log = Join-Path $env:USERPROFILE ("Desktop\FTDI_FixPortName_{0}.log" -f (Get-Date -Format yyyyMMdd_HHmmss)
"Started: $(Get-Date -Format u)" | Out-File -FilePath $log -Encoding UTF8 # helper: find COM assigned to a PnP instance via Win32_SerialPort
function Get-ComForInstance { param([string]$instanceId) try { # exact match first $sp = Get-CimInstance -ClassName Win32_SerialPort -ErrorAction SilentlyContinue | Where-Object { $_.PNPDeviceID -eq $instanceId } if ($sp) { return $sp.DeviceID } # e.g. "COM3" # otherwise try to match the tail (last segment) which often appears in PNPDeviceID $tail = ($instanceId -split '\\')[-1] if ($tail) { $sp = Get-CimInstance -ClassName Win32_SerialPort -ErrorAction SilentlyContinue | Where-Object { $_.PNPDeviceID -like "*$tail*" } if ($sp) { return $sp.DeviceID } } } catch { # ignore } return $null
} # main
$ports = Get-PnpDevice -Class Ports -PresentOnly -ErrorAction SilentlyContinue | Where-Object { ($_.Manufacturer -and $_.Manufacturer -like '*FTDI*') -or ($_.InstanceId -and $_.InstanceId -match 'VID_0403') } if (-not $ports -or $ports.Count -eq 0) { "No FTDI COM ports found." | Tee-Object -FilePath $log -Append Write-Output "No FTDI COM ports found. See log: $log" exit 0
} "Found $($ports.Count) FTDI COM port(s)." | Tee-Object -FilePath $log -Append $createdCount = 0 foreach ($p in $ports) { "----" | Tee-Object -FilePath $log -Append "Device: $($p.FriendlyName)" | Tee-Object -FilePath $log -Append "InstanceId: $($p.InstanceId)" | Tee-Object -FilePath $log -Append $inst = $p.InstanceId $enumBase = 'HKLM:\SYSTEM\CurrentControlSet\Enum' $parts = $inst -split '\\' $sub = [string]($parts -join '\') $regPathBase = Join-Path $enumBase $sub # candidate Device Parameters locations $candidates = @( Join-Path $regPathBase 'Device Parameters', Join-Path (Join-Path $regPathBase '0000') 'Device Parameters') $found = $false foreach ($dp in $candidates) { "Checking: $dp" | Tee-Object -FilePath $log -Append if (Test-Path $dp) { $found = $true "Using Device Parameters: $dp" | Tee-Object -FilePath $log -Append # 1) If PortName missing or empty -> populate from system COM mapping (safe; does not reassign) try { $portExists = $false $portVal = $null try { $portVal = (Get-ItemProperty -Path $dp -Name 'PortName' -ErrorAction SilentlyContinue).PortName } catch { $portVal = $null } if ([string]::IsNullOrWhiteSpace($portVal) { # find COM assigned to this instance $com = Get-ComForInstance -instanceId $inst if ($com) { if ($WhatIf) { "WhatIf: would write PortName = $com at $dp" | Tee-Object -FilePath $log -Append $createdCount++ } else { try { New-Item -Path $dp -Force | Out-Null New-ItemProperty -Path $dp -Name 'PortName' -PropertyType String -Value $com -Force -ErrorAction Stop | Out-Null "WROTE PortName = $com at $dp" | Tee-Object -FilePath $log -Append $createdCount++ } catch { "ERROR writing PortName at $dp : $($_.Exception.Message)" | Tee-Object -FilePath $log -Append } } } else { "Could not detect COM for instance $inst (PortName not written)." | Tee-Object -FilePath $log -Append } } else { "PortName already exists at $dp: $portVal (not changed)" | Tee-Object -FilePath $log -Append } } catch { "Error reading/writing PortName at $dp: $($_.Exception.Message)" | Tee-Object -FilePath $log -Append } # 2) Create selective-suspend values only if missing $props = @{ DeviceIdleEnabled=0; DefaultIdleState=0; UserSetDeviceIdleEnabled=0; SSIdleTimeout=0 } foreach ($kv in $props.GetEnumerator { $name = $kv.Key; $val = $kv.Value $exists = $false try { $exists = (Get-ItemProperty -Path $dp -Name $name -ErrorAction SilentlyContinue) -ne $null } catch { $exists = $false } if ($exists) { "$name exists - skipping" | Tee-Object -FilePath $log -Append } else { if ($WhatIf) { "WhatIf: would create $name = $val at $dp" | Tee-Object -FilePath $log -Append $createdCount++ } else { try { New-Item -Path $dp -Force | Out-Null New-ItemProperty -Path $dp -Name $name -PropertyType DWord -Value $val -Force -ErrorAction Stop | Out-Null "Created $name = $val at $dp" | Tee-Object -FilePath $log -Append $createdCount++ } catch { "ERROR creating $name at $dp : $($_.Exception.Message)" | Tee-Object -FilePath $log -Append } } } } break } else { "Not found: $dp" | Tee-Object -FilePath $log -Append } } if (-not $found) { "Device Parameters not found for instance $inst - creating one at the primary location." | Tee-Object -FilePath $log -Append # create primary Device Parameters key and repeat actions $dp = Join-Path $regPathBase 'Device Parameters' if ($WhatIf) { "WhatIf: would create key $dp and attempt to write PortName and properties." | Tee-Object -FilePath $log -Append $createdCount++ } else { try { New-Item -Path $dp -Force | Out-Null "Created key $dp" | Tee-Object -FilePath $log -Append # try PortName detection and writes (same logic) $com = Get-ComForInstance -instanceId $inst if ($com) { try { New-ItemProperty -Path $dp -Name 'PortName' -PropertyType String -Value $com -Force -ErrorAction Stop | Out-Null "WROTE PortName = $com at $dp" | Tee-Object -FilePath $log -Append $createdCount++ } catch { "ERROR writing PortName at $dp : $($_.Exception.Message)" | Tee-Object -FilePath $log -Append } } else { "Could not detect COM for instance $inst." | Tee-Object -FilePath $log -Append } foreach ($kv in @{ DeviceIdleEnabled=0; DefaultIdleState=0; UserSetDeviceIdleEnabled=0; SSIdleTimeout=0 }.GetEnumerator { try { New-ItemProperty -Path $dp -Name $kv.Key -PropertyType DWord -Value $kv.Value -Force -ErrorAction Stop | Out-Null "Created $($kv.Key) = $($kv.Value) at $dp" | Tee-Object -FilePath $log -Append $createdCount++ } catch { "ERROR creating $($kv.Key) at $dp : $($_.Exception.Message)" | Tee-Object -FilePath $log -Append } } } catch { "ERROR creating Device Parameters key $dp : $($_.Exception.Message)" | Tee-Object -FilePath $log -Append } } } } # foreach port "Created/changed count: $createdCount" | Tee-Object -FilePath $log -Append # rescan devices so Windows picks up changes (safer than an immediate reboot)
if (-not $NoReboot) { if ($createdCount -gt 0 -and -not $WhatIf) { "Scheduling reboot in 15 seconds so changes take effect (or run pnputil /scan-devices to rescan)." | Tee-Object -FilePath $log -Append Start-Process -FilePath 'shutdown.exe' -ArgumentList @('/r','/t','15','/c','Applying FTDI Device Parameter changes') -NoNewWindow } else { "No reboot scheduled. If you created properties and want immediate recognition, run: pnputil /scan-devices or reboot manually." | Tee-Object -FilePath $log -Append }
} else { "NoReboot specified; no reboot scheduled. If you created properties, run: pnputil /scan-devices or reboot manually." | Tee-Object -FilePath $log -Append
} "Completed: $(Get-Date -Format u)" | Tee-Object -FilePath $log -Append
Write-Output "Done. Log: $log"

<#
Fix-FTDI-PortName-And-SelectiveSuspend.ps1
- Writes PortName (COMn) into each FTDI device's Device Parameters if missing (reads the real COM from Win32_SerialPort)
- Creates selective-suspend values only if missing: DeviceIdleEnabled, DefaultIdleState, UserSetDeviceIdleEnabled, SSIdleTimeout = 0
- Does NOT change COM assignments.
- Logs to Desktop and performs a device rescan at the end.
Run as Administrator.
#> param( [switch]$WhatIf, # dry-run: show what would be done, do not write [switch]$NoReboot # if you want to suppress reboot/rescan at end (script does a rescan by default) # require elevated
if (-not ([Security.Principal.WindowsPrincipal] [Security.Principal.WindowsIdentity]::GetCurrent.IsInRole([Security.Principal.WindowsBuiltinRole]::Administrator) { Write-Error "Run in an elevated PowerShell (Run as Administrator). Exiting." exit 1
} $log = Join-Path $env:USERPROFILE ("Desktop\FTDI_FixPortName_{0}.log" -f (Get-Date -Format yyyyMMdd_HHmmss)
"Started: $(Get-Date -Format u)" | Out-File -FilePath $log -Encoding UTF8 # helper: find COM assigned to a PnP instance via Win32_SerialPort
function Get-ComForInstance { param([string]$instanceId) try { # exact match first $sp = Get-CimInstance -ClassName Win32_SerialPort -ErrorAction SilentlyContinue | Where-Object { $_.PNPDeviceID -eq $instanceId } if ($sp) { return $sp.DeviceID } # e.g. "COM3" # otherwise try to match the tail (last segment) which often appears in PNPDeviceID $tail = ($instanceId -split '\\')[-1] if ($tail) { $sp = Get-CimInstance -ClassName Win32_SerialPort -ErrorAction SilentlyContinue | Where-Object { $_.PNPDeviceID -like "*$tail*" } if ($sp) { return $sp.DeviceID } } } catch { # ignore } return $null
} # main
$ports = Get-PnpDevice -Class Ports -PresentOnly -ErrorAction SilentlyContinue | Where-Object { ($_.Manufacturer -and $_.Manufacturer -like '*FTDI*') -or ($_.InstanceId -and $_.InstanceId -match 'VID_0403') } if (-not $ports -or $ports.Count -eq 0) { "No FTDI COM ports found." | Tee-Object -FilePath $log -Append Write-Output "No FTDI COM ports found. See log: $log" exit 0
} "Found $($ports.Count) FTDI COM port(s)." | Tee-Object -FilePath $log -Append $createdCount = 0 foreach ($p in $ports) { "----" | Tee-Object -FilePath $log -Append "Device: $($p.FriendlyName)" | Tee-Object -FilePath $log -Append "InstanceId: $($p.InstanceId)" | Tee-Object -FilePath $log -Append $inst = $p.InstanceId $enumBase = 'HKLM:\SYSTEM\CurrentControlSet\Enum' $parts = $inst -split '\\' $sub = [string]($parts -join '\') $regPathBase = Join-Path $enumBase $sub # candidate Device Parameters locations $candidates = @( Join-Path $regPathBase 'Device Parameters', Join-Path (Join-Path $regPathBase '0000') 'Device Parameters') $found = $false foreach ($dp in $candidates) { "Checking: $dp" | Tee-Object -FilePath $log -Append if (Test-Path $dp) { $found = $true "Using Device Parameters: $dp" | Tee-Object -FilePath $log -Append # 1) If PortName missing or empty -> populate from system COM mapping (safe; does not reassign) try { $portVal = $null try { $portVal = (Get-ItemProperty -Path $dp -Name 'PortName' -ErrorAction SilentlyContinue).PortName } catch { $portVal = $null } if ([string]::IsNullOrWhiteSpace($portVal) { # find COM assigned to this instance $com = Get-ComForInstance -instanceId $inst if ($com) { if ($WhatIf) { "WhatIf: would write PortName = $com at $($dp)" | Tee-Object -FilePath $log -Append $createdCount++ } else { try { New-Item -Path $dp -Force | Out-Null New-ItemProperty -Path $dp -Name 'PortName' -PropertyType String -Value $com -Force -ErrorAction Stop | Out-Null "WROTE PortName = $com at $($dp)" | Tee-Object -FilePath $log -Append $createdCount++ } catch { "ERROR writing PortName at $($dp) : $($_.Exception.Message)" | Tee-Object -FilePath $log -Append } } } else { "Could not detect COM for instance $inst (PortName not written)." | Tee-Object -FilePath $log -Append } } else { "PortName already exists at $($dp): $portVal (not changed)" | Tee-Object -FilePath $log -Append } } catch { "Error reading/writing PortName at $($dp): $($_.Exception.Message)" | Tee-Object -FilePath $log -Append } # 2) Create selective-suspend values only if missing $props = @{ DeviceIdleEnabled=0; DefaultIdleState=0; UserSetDeviceIdleEnabled=0; SSIdleTimeout=0 } foreach ($kv in $props.GetEnumerator { $name = $kv.Key; $val = $kv.Value $exists = $false try { $exists = (Get-ItemProperty -Path $dp -Name $name -ErrorAction SilentlyContinue) -ne $null } catch { $exists = $false } if ($exists) { "$name exists - skipping" | Tee-Object -FilePath $log -Append } else { if ($WhatIf) { "WhatIf: would create $name = $val at $($dp)" | Tee-Object -FilePath $log -Append $createdCount++ } else { try { New-Item -Path $dp -Force | Out-Null New-ItemProperty -Path $dp -Name $name -PropertyType DWord -Value $val -Force -ErrorAction Stop | Out-Null "Created $name = $val at $($dp)" | Tee-Object -FilePath $log -Append $createdCount++ } catch { "ERROR creating $name at $($dp) : $($_.Exception.Message)" | Tee-Object -FilePath $log -Append } } } } break } else { "Not found: $dp" | Tee-Object -FilePath $log -Append } } if (-not $found) { "Device Parameters not found for instance $inst - creating one at the primary location." | Tee-Object -FilePath $log -Append # create primary Device Parameters key and repeat actions $dp = Join-Path $regPathBase 'Device Parameters' if ($WhatIf) { "WhatIf: would create key $($dp) and attempt to write PortName and properties." | Tee-Object -FilePath $log -Append $createdCount++ } else { try { New-Item -Path $dp -Force | Out-Null "Created key $($dp)" | Tee-Object -FilePath $log -Append # try PortName detection and writes (same logic) $com = Get-ComForInstance -instanceId $inst if ($com) { try { New-ItemProperty -Path $dp -Name 'PortName' -PropertyType String -Value $com -Force -ErrorAction Stop | Out-Null "WROTE PortName = $com at $($dp)" | Tee-Object -FilePath $log -Append $createdCount++ } catch { "ERROR writing PortName at $($dp) : $($_.Exception.Message)" | Tee-Object -FilePath $log -Append } } else { "Could not detect COM for instance $inst." | Tee-Object -FilePath $log -Append } foreach ($kv in @{ DeviceIdleEnabled=0; DefaultIdleState=0; UserSetDeviceIdleEnabled=0; SSIdleTimeout=0 }.GetEnumerator { try { New-ItemProperty -Path $dp -Name $kv.Key -PropertyType DWord -Value $kv.Value -Force -ErrorAction Stop | Out-Null "Created $($kv.Key) = $($kv.Value) at $($dp)" | Tee-Object -FilePath $log -Append $createdCount++ } catch { "ERROR creating $($kv.Key) at $($dp) : $($_.Exception.Message)" | Tee-Object -FilePath $log -Append } } } catch { "ERROR creating Device Parameters key $($dp) : $($_.Exception.Message)" | Tee-Object -FilePath $log -Append } } } } # foreach port "Created/changed count: $createdCount" | Tee-Object -FilePath $log -Append # rescan devices so Windows picks up changes (safer than an immediate reboot)
if (-not $NoReboot) { if ($createdCount -gt 0 -and -not $WhatIf) { "Scheduling reboot in 15 seconds so changes take effect (or run pnputil /scan-devices to rescan)." | Tee-Object -FilePath $log -Append Start-Process -FilePath 'shutdown.exe' -ArgumentList @('/r','/t','15','/c','Applying FTDI Device Parameter changes') -NoNewWindow } else { "No reboot scheduled. If you created properties and want immediate recognition, run: pnputil /scan-devices or reboot manually." | Tee-Object -FilePath $log -Append }
} else { "NoReboot specified; no reboot scheduled. If you created properties, run: pnputil /scan-devices or reboot manually." | Tee-Object -FilePath $log -Append
} "Completed: $(Get-Date -Format u)" | Tee-Object -FilePath $log -Append
Write-Output "Done. Log: $log"

 # create Device Parameters key if missing if (-not (Test-Path $dp) { try { New-Item -Path $dp -Force | Out-Null; Write-Output "Created key: $dp" } catch { Write-Warning "Failed to create $dp: $($_.Exception.Message)"; return } } # only write PortName if missing try { $curr = (Get-ItemProperty -Path $dp -Name 'PortName' -ErrorAction SilentlyContinue).PortName } catch { $curr = $null } if ([string]::IsNullOrWhiteSpace($curr) { try { New-ItemProperty -Path $dp -Name 'PortName' -PropertyType String -Value $com -Force | Out-Null Write-Output "WROTE PortName=$com for instance $inst" } catch { Write-Warning "Failed to write PortName for $inst: $($_.Exception.Message)" } } else { Write-Output "PortName already exists for $inst: $curr (no change)" }
} else { Write-Output "Could not find COM in FriendlyName for device: $($_.FriendlyName) — skipping"
}

<#
Fix-FTDI-FullFlow.ps1
- Create Device Parameters if missing, write PortName if missing (from FriendlyName or WMI), and set selective-suspend values only if missing.
- Does NOT change COM assignments.
- Logs to Desktop and rescans/devices + schedules reboot if changes occurred.
Run as Administrator.
#> param( [switch]$WhatIf, # dry run: show actions, do not write or reboot [switch]$NoReboot # suppress scheduling a reboot even if changes were made) # Verify elevation
if (-not ([Security.Principal.WindowsPrincipal] [Security.Principal.WindowsIdentity]::GetCurrent.IsInRole([Security.Principal.WindowsBuiltinRole]::Administrator) { Write-Error "Script must be run elevated (Run as Administrator). Exiting." exit 1
} $timestamp = (Get-Date).ToString('yyyyMMdd_HHmmss')
$logFile = Join-Path $env:USERPROFILE ("Desktop\FTDI_FullFlow_$timestamp.log")
"Started: $(Get-Date -Format u)" | Out-File -FilePath $logFile -Encoding UTF8 # Helper: detect COM for PnP instance via Win32_SerialPort
function Get-ComForInstance { param([string]$instanceId) try { $sp = Get-CimInstance -ClassName Win32_SerialPort -ErrorAction SilentlyContinue | Where-Object { $_.PNPDeviceID -eq $instanceId } if ($sp) { return $sp.DeviceID } # e.g. "COM4" # Tail match fallback $tail = ($instanceId -split '\\')[-1] if ($tail) { $sp = Get-CimInstance -ClassName Win32_SerialPort -ErrorAction SilentlyContinue | Where-Object { $_.PNPDeviceID -like "*$tail*" } if ($sp) { return $sp.DeviceID } } } catch { # ignore } return $null
} # Find FTDI COM ports
$ports = Get-PnpDevice -Class Ports -PresentOnly -ErrorAction SilentlyContinue | Where-Object { ($_.Manufacturer -and $_.Manufacturer -like '*FTDI*') -or ($_.InstanceId -and $_.InstanceId -match 'VID_0403') } if (-not $ports -or $ports.Count -eq 0) { "No FTDI COM ports found." | Tee-Object -FilePath $logFile -Append Write-Output "No FTDI COM ports found. See log: $logFile" exit 0
} "Found $($ports.Count) FTDI COM port(s)." | Tee-Object -FilePath $logFile -Append $createdCount = 0
$errors = @ foreach ($p in $ports) { "----" | Tee-Object -FilePath $logFile -Append "Device FriendlyName: $($p.FriendlyName)" | Tee-Object -FilePath $logFile -Append "InstanceId: $($p.InstanceId)" | Tee-Object -FilePath $logFile -Append $inst = $p.InstanceId if ([string]::IsNullOrWhiteSpace($inst) { "InstanceId empty; skipping" | Tee-Object -FilePath $logFile -Append continue } # Build registry path robustly $enumBase = 'HKLM:\SYSTEM\CurrentControlSet\Enum' $parts = $inst -split '\\' $subpath = [string]($parts -join '\') $regPathBase = Join-Path $enumBase $subpath $dpCandidates = @( Join-Path $regPathBase 'Device Parameters', Join-Path (Join-Path $regPathBase '0000') 'Device Parameters') $dpFound = $false foreach ($dp in $dpCandidates) { "Checking: $dp" | Tee-Object -FilePath $logFile -Append if (Test-Path $dp) { $dpFound = $true "Using Device Parameters: $dp" | Tee-Object -FilePath $logFile -Append # 1) PortName: write only if missing try { $portVal = $null try { $portVal = (Get-ItemProperty -Path $dp -Name 'PortName' -ErrorAction SilentlyContinue).PortName } catch { $portVal = $null } if ([string]::IsNullOrWhiteSpace($portVal) { # Try FriendlyName first (e.g. "USB Serial Port (COM4)") $friendly = $p.FriendlyName $detectedCom = $null if ($friendly -and ($friendly -match '\(COM(\d+)\)') { $detectedCom = "COM$($matches[1])" "Detected COM from FriendlyName: $detectedCom" | Tee-Object -FilePath $logFile -Append } else { # fallback: WMI lookup $detectedCom = Get-ComForInstance -instanceId $inst if ($detectedCom) { "Detected COM via WMI: $detectedCom" | Tee-Object -FilePath $logFile -Append } } if ($detectedCom) { if ($WhatIf) { "WhatIf: would write PortName = $detectedCom at $dp" | Tee-Object -FilePath $logFile -Append $createdCount++ } else { try { New-Item -Path $dp -Force | Out-Null New-ItemProperty -Path $dp -Name 'PortName' -PropertyType String -Value $detectedCom -Force -ErrorAction Stop | Out-Null "WROTE PortName = $detectedCom at $dp" | Tee-Object -FilePath $logFile -Append $createdCount++ } catch { "ERROR writing PortName at $dp : $($_.Exception.Message)" | Tee-Object -FilePath $logFile -Append $errors += "PortName write error for $inst : $($_.Exception.Message)" } } } else { "Could not detect COM for $inst; PortName not written." | Tee-Object -FilePath $logFile -Append } } else { "PortName already exists at $($dp): $portVal (no change)" | Tee-Object -FilePath $logFile -Append } } catch { "Error reading/writing PortName at $($dp): $($_.Exception.Message)" | Tee-Object -FilePath $logFile -Append $errors += "PortName error for $inst : $($_.Exception.Message)" } # 2) Ensure selective-suspend properties exist (create only if missing) $props = @{ DeviceIdleEnabled=0; DefaultIdleState=0; UserSetDeviceIdleEnabled=0; SSIdleTimeout=0 } foreach ($kv in $props.GetEnumerator { $name = $kv.Key; $val = $kv.Value try { $exists = (Get-ItemProperty -Path $dp -Name $name -ErrorAction SilentlyContinue) -ne $null } catch { $exists = $false } if ($exists) { "$name already present at $dp - skipping" | Tee-Object -FilePath $logFile -Append } else { if ($WhatIf) { "WhatIf: would create $name = $val at $dp" | Tee-Object -FilePath $logFile -Append $createdCount++ } else { try { New-Item -Path $dp -Force | Out-Null New-ItemProperty -Path $dp -Name $name -PropertyType DWord -Value $val -Force -ErrorAction Stop | Out-Null "Created $name = $val at $dp" | Tee-Object -FilePath $logFile -Append $createdCount++ } catch { "ERROR creating $name at $dp : $($_.Exception.Message)" | Tee-Object -FilePath $logFile -Append $errors += "Create $name error for $inst : $($_.Exception.Message)" } } } } break } else { "Not found: $dp" | Tee-Object -FilePath $logFile -Append } } # foreach candidate if (-not $dpFound) { # Create primary Device Parameters and repeat actions $dp = Join-Path $regPathBase 'Device Parameters' "Device Parameters not found - creating $dp" | Tee-Object -FilePath $logFile -Append if ($WhatIf) { "WhatIf: would create key $dp and attempt writes" | Tee-Object -FilePath $logFile -Append $createdCount++ } else { try { New-Item -Path $dp -Force | Out-Null "Created key $dp" | Tee-Object -FilePath $logFile -Append } catch { "ERROR creating key $dp : $($_.Exception.Message)" | Tee-Object -FilePath $logFile -Append $errors += "Create key error for $inst : $($_.Exception.Message)" continue } # Attempt PortName detection/writes as above $detectedCom = $null $friendly = $p.FriendlyName if ($friendly -and ($friendly -match '\(COM(\d+)\)') { $detectedCom = "COM$($matches[1])" } if (-not $detectedCom) { $detectedCom = Get-ComForInstance -instanceId $inst } if ($detectedCom) { try { New-ItemProperty -Path $dp -Name 'PortName' -PropertyType String -Value $detectedCom -Force -ErrorAction Stop | Out-Null "WROTE PortName = $detectedCom at $dp" | Tee-Object -FilePath $logFile -Append $createdCount++ } catch { "ERROR writing PortName at $dp : $($_.Exception.Message)" | Tee-Object -FilePath $logFile -Append $errors += "PortName write error for $inst : $($_.Exception.Message)" } } else { "Could not detect COM for $inst after creating key." | Tee-Object -FilePath $logFile -Append } # create selective-suspend props foreach ($kv in @{ DeviceIdleEnabled=0; DefaultIdleState=0; UserSetDeviceIdleEnabled=0; SSIdleTimeout=0 }.GetEnumerator { try { New-ItemProperty -Path $dp -Name $kv.Key -PropertyType DWord -Value $kv.Value -Force -ErrorAction Stop | Out-Null "Created $($kv.Key) = $($kv.Value) at $dp" | Tee-Object -FilePath $logFile -Append $createdCount++ } catch { "ERROR creating $($kv.Key) at $dp : $($_.Exception.Message)" | Tee-Object -FilePath $logFile -Append $errors += "Create prop error $($kv.Key) for $inst : $($_.Exception.Message)" } } } }
} # foreach port "Created/changed count: $createdCount" | Tee-Object -FilePath $logFile -Append
if ($errors.Count -gt 0) { "Errors: $($errors.Count)" | Tee-Object -FilePath $logFile -Append; $errors | Tee-Object -FilePath $logFile -Append } # Rescan devices (pnputil /scan-devices) and schedule reboot if changes were made
try { Write-Output "Running device rescan: pnputil /scan-devices" | Tee-Object -FilePath $logFile -Append Start-Process -FilePath 'pnputil.exe' -ArgumentList '/scan-devices' -NoNewWindow -Wait
} catch { "pnputil failed: $($_.Exception.Message)" | Tee-Object -FilePath $logFile -Append
} if (($createdCount -gt 0) -and (-not $WhatIf) -and (-not $NoReboot) { "Scheduling reboot in 15 seconds so changes take effect (abort with 'shutdown /a')." | Tee-Object -FilePath $logFile -Append Start-Process -FilePath 'shutdown.exe' -ArgumentList @('/r','/t','15','/c','Applying FTDI Device Parameter changes') -NoNewWindow
} else { "No reboot scheduled. If you created properties and want immediate recognition, run: pnputil /scan-devices or reboot manually." | Tee-Object -FilePath $logFile -Append
} "Completed: $(Get-Date -Format u)" | Tee-Object -FilePath $logFile -Append
Write-Output "Done. Log saved to: $logFile"

# build registry enum base path safely
$enumBase = 'HKLM:\SYSTEM\CurrentControlSet\Enum'
$parts = $inst -split '\\' # splits on literal backslash
$subpath = [string]($parts -join '\') # ensure a single string
$regPathBase = [string](Join-Path $enumBase $subpath) # build candidate Device Parameters paths (each Join-Path gets strings)
$dpCandidates = @
$dpCandidates += Join-Path $regPathBase 'Device Parameters'
$dpCandidates += Join-Path $regPathBase '0000\Device Parameters'

$enumBase = 'HKLM:\SYSTEM\CurrentControlSet\Enum'
# find Enum node(s) whose PSPath or name contains the InstanceId tail
$tail = ($inst -split '\\')[-1]
$matches = Get-ChildItem -Path $enumBase -Recurse -ErrorAction SilentlyContinue | Where-Object { $_.PSPath -match [regex]::Escape($tail) -or $_.PSPath -match [regex]::Escape($inst) } # build candidate Device Parameters paths from each matching node
$dpCandidates = @
foreach ($m in $matches) { $dpCandidates += Join-Path $m.PSPath 'Device Parameters' $dpCandidates += Join-Path (Join-Path $m.PSPath '0000') 'Device Parameters'
} # if $dpCandidates is still empty, fall back to the constructed path
if ($dpCandidates.Count -eq 0) { $parts = $inst -split '\\' $subpath = [string]($parts -join '\') $regPathBase = Join-Path $enumBase $subpath $dpCandidates += Join-Path $regPathBase 'Device Parameters' $dpCandidates += Join-Path (Join-Path $regPathBase '0000') 'Device Parameters'
}

# test snippet (run elevated)
$inst = 'PASTE_ONE_InstanceID_HERE'
# paste Option A block here and then:
$dpCandidates | ForEach-Object { Write-Output "Candidate: $_ (Exists: $(Test-Path $_)" }

<#
Fix-FTDI-FullFlow.ps1
- Create Device Parameters if missing, write PortName if missing (from FriendlyName or WMI), and set selective-suspend values only if missing.
- Does NOT change COM assignments.
- Logs to Desktop and rescans/devices + schedules reboot if changes occurred.
Run as Administrator.
#> param( [switch]$WhatIf, # dry run: show actions, do not write or reboot [switch]$NoReboot # suppress scheduling a reboot even if changes were made) # Verify elevation
if (-not ([Security.Principal.WindowsPrincipal] [Security.Principal.WindowsIdentity]::GetCurrent.IsInRole([Security.Principal.WindowsBuiltinRole]::Administrator) { Write-Error "Script must be run elevated (Run as Administrator). Exiting." exit 1
} $timestamp = (Get-Date).ToString('yyyyMMdd_HHmmss')
$logFile = Join-Path $env:USERPROFILE ("Desktop\FTDI_FullFlow_$timestamp.log")
"Started: $(Get-Date -Format u)" | Out-File -FilePath $logFile -Encoding UTF8 # Helper: detect COM for PnP instance via Win32_SerialPort
function Get-ComForInstance { param([string]$instanceId) try { $sp = Get-CimInstance -ClassName Win32_SerialPort -ErrorAction SilentlyContinue | Where-Object { $_.PNPDeviceID -eq $instanceId } if ($sp) { return $sp.DeviceID } # e.g. "COM4" # Tail match fallback $tail = ($instanceId -split '\\')[-1] if ($tail) { $sp = Get-CimInstance -ClassName Win32_SerialPort -ErrorAction SilentlyContinue | Where-Object { $_.PNPDeviceID -like "*$tail*" } if ($sp) { return $sp.DeviceID } } } catch { # ignore } return $null
} # Find FTDI COM ports
$ports = Get-PnpDevice -Class Ports -PresentOnly -ErrorAction SilentlyContinue | Where-Object { ($_.Manufacturer -and $_.Manufacturer -like '*FTDI*') -or ($_.InstanceId -and $_.InstanceId -match 'VID_0403') } if (-not $ports -or $ports.Count -eq 0) { "No FTDI COM ports found." | Tee-Object -FilePath $logFile -Append Write-Output "No FTDI COM ports found. See log: $logFile" exit 0
} "Found $($ports.Count) FTDI COM port(s)." | Tee-Object -FilePath $logFile -Append $createdCount = 0
$errors = @ foreach ($p in $ports) { "----" | Tee-Object -FilePath $logFile -Append "Device FriendlyName: $($p.FriendlyName)" | Tee-Object -FilePath $logFile -Append "InstanceId: $($p.InstanceId)" | Tee-Object -FilePath $logFile -Append $inst = $p.InstanceId if ([string]::IsNullOrWhiteSpace($inst) { "InstanceId empty; skipping" | Tee-Object -FilePath $logFile -Append continue } # Build registry path robustly (force single string) $enumBase = 'HKLM:\SYSTEM\CurrentControlSet\Enum' $parts = $inst -split '\\' $subpath = [string]($parts -join '\') # ensures single string $regPathBase = Join-Path $enumBase $subpath # Candidate Device Parameters paths built as strings (prevents Join-Path array error) $dpCandidates = @ $dpCandidates += Join-Path $regPathBase 'Device Parameters' $dpCandidates += Join-Path $regPathBase '0000\Device Parameters' # If those candidates don't exist, try to locate the Enum node(s) that match the Instance tail (robust fallback) $dpFound = $false foreach ($dp in $dpCandidates) { "Checking: $dp" | Tee-Object -FilePath $logFile -Append if (Test-Path $dp) { $dpFound = $true "Using Device Parameters: $dp" | Tee-Object -FilePath $logFile -Append # 1) PortName: write only if missing try { $portVal = $null try { $portVal = (Get-ItemProperty -Path $dp -Name 'PortName' -ErrorAction SilentlyContinue).PortName } catch { $portVal = $null } if ([string]::IsNullOrWhiteSpace($portVal) { # Try FriendlyName first (e.g. "USB Serial Port (COM4)") $friendly = $p.FriendlyName $detectedCom = $null if ($friendly -and ($friendly -match '\(COM(\d+)\)') { $detectedCom = "COM$($matches[1])" "Detected COM from FriendlyName: $detectedCom" | Tee-Object -FilePath $logFile -Append } else { # fallback: WMI lookup $detectedCom = Get-ComForInstance -instanceId $inst if ($detectedCom) { "Detected COM via WMI: $detectedCom" | Tee-Object -FilePath $logFile -Append } } if ($detectedCom) { if ($WhatIf) { "WhatIf: would write PortName = $detectedCom at $dp" | Tee-Object -FilePath $logFile -Append $createdCount++ } else { try { New-Item -Path $dp -Force | Out-Null New-ItemProperty -Path $dp -Name 'PortName' -PropertyType String -Value $detectedCom -Force -ErrorAction Stop | Out-Null "WROTE PortName = $detectedCom at $dp" | Tee-Object -FilePath $logFile -Append $createdCount++ } catch { "ERROR writing PortName at $dp : $($_.Exception.Message)" | Tee-Object -FilePath $logFile -Append $errors += "PortName write error for $inst : $($_.Exception.Message)" } } } else { "Could not detect COM for $inst; PortName not written." | Tee-Object -FilePath $logFile -Append } } else { "PortName already exists at $($dp): $portVal (no change)" | Tee-Object -FilePath $logFile -Append } } catch { "Error reading/writing PortName at $($dp): $($_.Exception.Message)" | Tee-Object -FilePath $logFile -Append $errors += "PortName error for $inst : $($_.Exception.Message)" } # 2) Ensure selective-suspend properties exist (create only if missing) $props = @{ DeviceIdleEnabled=0; DefaultIdleState=0; UserSetDeviceIdleEnabled=0; SSIdleTimeout=0 } foreach ($kv in $props.GetEnumerator { $name = $kv.Key; $val = $kv.Value try { $exists = (Get-ItemProperty -Path $dp -Name $name -ErrorAction SilentlyContinue) -ne $null } catch { $exists = $false } if ($exists) { "$name already present at $dp - skipping" | Tee-Object -FilePath $logFile -Append } else { if ($WhatIf) { "WhatIf: would create $name = $val at $dp" | Tee-Object -FilePath $logFile -Append $createdCount++ } else { try { New-Item -Path $dp -Force | Out-Null New-ItemProperty -Path $dp -Name $name -PropertyType DWord -Value $val -Force -ErrorAction Stop | Out-Null "Created $name = $val at $dp" | Tee-Object -FilePath $logFile -Append $createdCount++ } catch { "ERROR creating $name at $dp : $($_.Exception.Message)" | Tee-Object -FilePath $logFile -Append $errors += "Create $name error for $inst : $($_.Exception.Message)" } } } } break } else { "Not found: $dp" | Tee-Object -FilePath $logFile -Append } } # foreach candidate if (-not $dpFound) { # Fallback: search Enum subtree for nodes that match instance tail $tail = ($inst -split '\\')[-1] $matches = Get-ChildItem -Path $enumBase -Recurse -ErrorAction SilentlyContinue | Where-Object { $_.PSPath -match [regex]::Escape($tail) -or $_.PSPath -match [regex]::Escape($inst) } if ($matches -and $matches.Count -gt 0) { foreach ($m in $matches) { $dp1 = Join-Path $m.PSPath 'Device Parameters' $dp2 = Join-Path (Join-Path $m.PSPath '0000') 'Device Parameters' foreach ($dp in @($dp1,$dp2) { if (Test-Path $dp) { "Found Device Parameters via Enum search: $dp" | Tee-Object -FilePath $logFile -Append # perform same PortName/props logic on $dp # (reuse logic above: brief version) try { $portVal = (Get-ItemProperty -Path $dp -Name 'PortName' -ErrorAction SilentlyContinue).PortName } catch { $portVal = $null } if ([string]::IsNullOrWhiteSpace($portVal) { $detectedCom = $null $friendly = $p.FriendlyName if ($friendly -and ($friendly -match '\(COM(\d+)\)') { $detectedCom = "COM$($matches[1])" } if (-not $detectedCom) { $detectedCom = Get-ComForInstance -instanceId $inst } if ($detectedCom) { if ($WhatIf) { "WhatIf: would write PortName = $detectedCom at $dp" | Tee-Object -FilePath $logFile -Append; $createdCount++ } else { try { New-ItemProperty -Path $dp -Name 'PortName' -PropertyType String -Value $detectedCom -Force -ErrorAction Stop | Out-Null; "WROTE PortName = $detectedCom at $dp" | Tee-Object -FilePath $logFile -Append; $createdCount++ } catch { "ERROR writing PortName at $dp : $($_.Exception.Message)" | Tee-Object -FilePath $logFile -Append; $errors += "PortName write error for $inst : $($_.Exception.Message)" } } } else { "Could not detect COM for $inst; PortName not written." | Tee-Object -FilePath $logFile -Append } } else { "PortName already exists at $($dp): $portVal (no change)" | Tee-Object -FilePath $logFile -Append } foreach ($kv in @{ DeviceIdleEnabled=0; DefaultIdleState=0; UserSetDeviceIdleEnabled=0; SSIdleTimeout=0 }.GetEnumerator { try { $exists = (Get-ItemProperty -Path $dp -Name $kv.Key -ErrorAction SilentlyContinue) -ne $null } catch { $exists = $false } if (-not $exists) { if ($WhatIf) { "WhatIf: would create $($kv.Key) = $($kv.Value) at $dp" | Tee-Object -FilePath $logFile -Append; $createdCount++ } else { try { New-ItemProperty -Path $dp -Name $kv.Key -PropertyType DWord -Value $kv.Value -Force -ErrorAction Stop | Out-Null; "Created $($kv.Key) = $($kv.Value) at $dp" | Tee-Object -FilePath $logFile -Append; $createdCount++ } catch { "ERROR creating $($kv.Key) at $dp : $($_.Exception.Message)" | Tee-Object -FilePath $logFile -Append; $errors += "Create prop error $($kv.Key) for $inst : $($_.Exception.Message)" } } } else { "$($kv.Key) exists at $dp - skip" | Tee-Object -FilePath $logFile -Append } } $dpFound = $true break } } if ($dpFound) { break } } } if (-not $dpFound) { "Device Parameters not found for $inst after search - creating primary location and writing values." | Tee-Object -FilePath $logFile -Append $dp = Join-Path $regPathBase 'Device Parameters' if ($WhatIf) { "WhatIf: would create key $dp and attempt writes" | Tee-Object -FilePath $logFile -Append $createdCount++ } else { try { New-Item -Path $dp -Force | Out-Null "Created key $dp" | Tee-Object -FilePath $logFile -Append # write portname (try friendly/WMI) $detectedCom = $null $friendly = $p.FriendlyName if ($friendly -and ($friendly -match '\(COM(\d+)\)') { $detectedCom = "COM$($matches[1])" } if (-not $detectedCom) { $detectedCom = Get-ComForInstance -instanceId $inst } if ($detectedCom) { New-ItemProperty -Path $dp -Name 'PortName' -PropertyType String -Value $detectedCom -Force -ErrorAction Stop | Out-Null "WROTE PortName = $detectedCom at $dp" | Tee-Object -FilePath $logFile -Append $createdCount++ } else { "Could not detect COM for $inst." | Tee-Object -FilePath $logFile -Append } foreach ($kv in @{ DeviceIdleEnabled=0; DefaultIdleState=0; UserSetDeviceIdleEnabled=0; SSIdleTimeout=0 }.GetEnumerator { try { New-ItemProperty -Path $dp -Name $kv.Key -PropertyType DWord -Value $kv.Value -Force -ErrorAction Stop | Out-Null; "Created $($kv.Key) = $($kv.Value) at $dp" | Tee-Object -FilePath $logFile -Append; $createdCount++ } catch { "ERROR creating $($kv.Key) at $dp : $($_.Exception.Message)" | Tee-Object -FilePath $logFile -Append; $errors += "Create prop error $($kv.Key) for $inst : $($_.Exception.Message)" } } } catch { "ERROR creating Device Parameters key $dp : $($_.Exception.Message)" | Tee-Object -FilePath $logFile -Append; $errors += "Create key error for $inst : $($_.Exception.Message)" } } } # end fallback create } # foreach ports "Created/changed count: $createdCount" | Tee-Object -FilePath $logFile -Append
if ($errors.Count -gt 0) { "Errors: $($errors.Count)" | Tee-Object -FilePath $logFile -Append; $errors | Tee-Object -FilePath $logFile -Append } # Rescan devices
try { Write-Output "Running device rescan: pnputil /scan-devices" | Tee-Object -FilePath $logFile -Append Start-Process -FilePath 'pnputil.exe' -ArgumentList '/scan-devices' -NoNewWindow -Wait
} catch { "pnputil failed: $($_.Exception.Message)" | Tee-Object -FilePath $logFile -Append
} if (($createdCount -gt 0) -and (-not $WhatIf) -and (-not $NoReboot) { "Scheduling reboot in 15 seconds so changes take effect (abort with 'shutdown /a')." | Tee-Object -FilePath $logFile -Append Start-Process -FilePath 'shutdown.exe' -ArgumentList @('/r','/t','15','/c','Applying FTDI Device Parameter changes') -NoNewWindow
} else { "No reboot scheduled. If you created properties and want immediate recognition, run: pnputil /scan-devices or reboot manually." | Tee-Object -FilePath $logFile -Append
} "Completed: $(Get-Date -Format u)" | Tee-Object -FilePath $logFile -Append
Write-Output "Done. Log saved to: $logFile"