Dell Command Update

PowerShell script to silently install and run Dell Command Update (DCU).

Overview

Dev Insight: This script was originally written to make sure devices deployed during our MDT process had the latest drivers/firmware from Dell, but it can also be used to update Dell devices already deployed via your RMM of choice.

This script downloads and installs the latest version of Dell Command Update (DCU) if not already installed. It will then use dcu-cli.exe to download and install all Dell driver/firmware updates, ignoring reboots.

Dell Command | Update Version 5.x Reference Guide | Dell US

Prerequisites: This script has no prerequisites.

Notes:

• Script will abort if a PC manufacturer other than Dell is detected.

• Incompatible products, such as Dell Update, will be removed if detected.

• Dell Command Update is not intended for use with server hardware. Use Dell System Update instead.

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Script

Script will abort if a PC manufacturer other than Dell is detected.

https://github.com/wise-io/scripts/blob/main/scripts/DellCommandUpdate.ps1

<#
  .SYNOPSIS
    Installs Dell updates via Dell Command Update
  .DESCRIPTION
    Installs the latest version of Dell Command Update and runs/applies all Dell updates silently.
  .LINK
    https://www.dell.com/support/manuals/en-us/command-update/dellcommandupdate_rg
  .NOTES
    Author: Aaron J. Stevenson
#>

function Invoke-PreinstallChecks {
  # Check PC manufacturer
  if ((Get-WmiObject win32_bios).Manufacturer -notlike '*Dell*') {
    Write-Output 'Not a Dell system. Aborting...'
    exit 0
  }
  
  # Check for incompatible products
  $RegPaths = @('HKLM:\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall', 'HKLM:\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Uninstall')
  $IncompatibleApps = Get-ChildItem -Path $RegPaths | Get-ItemProperty | Where-Object { $_.DisplayName -like 'Dell Update*' } | Select-Object
  foreach ($IncompatibleApp in $IncompatibleApps) {
    Write-Output "Attempting to remove program: [$($IncompatibleApp.DisplayName)]"
    try {
      $Null = cmd /c $IncompatibleApp.UninstallString /quiet
      Write-Output "Successfully removed package: [$($IncompatibleApp.DisplayName)]"
    }
    catch { 
      Write-Warning "Failed to remove provisioned package: [$($IncompatibleApp.DisplayName)]"
      Write-Warning $_
      exit 1
    }
  }
}

function Get-DownloadURL {
  $DellURL = 'https://www.dell.com/support/kbdoc/en-us/000177325/dell-command-update'
  $Headers = @{
    'accept'          = 'text/html'
    'accept-encoding' = 'gzip'
    'accept-language' = '*'
  }
  [String]$DellWebPage = Invoke-RestMethod -UseBasicParsing -Uri $DellURL -Headers $Headers
  if ($DellWebPage -match '(https://www\.dell\.com.*driverId=[a-zA-Z0-9]*)') { 
    $DownloadPage = Invoke-RestMethod -UseBasicParsing -Uri $Matches[1] -Headers $Headers
    if ($DownloadPage -match '(https://dl\.dell\.com.*Dell-Command-Update.*\.EXE)') { $Matches[1] }
  }
}

function Install-DCU {
  $DownloadURL = Get-DownloadURL
  $Installer = "$env:temp\dcu-setup.exe"
  $Version = $DownloadURL | Select-String '[0-9]*\.[0-9]*\.[0-9]*' | ForEach-Object { $_.Matches.Value }
  $AppName = 'Dell Command | Update for Windows Universal'
  $App = Get-ChildItem -Path $RegPaths | Get-ItemProperty | Where-Object { $_.DisplayName -like $AppName } | Select-Object
  if ($App.DisplayVersion -ne $Version) {
    Write-Output "Installing Dell Command Update: [$Version]"
    try {
      Invoke-WebRequest -Uri $DownloadURL -OutFile $Installer -UserAgent ([Microsoft.PowerShell.Commands.PSUserAgent]::Chrome)
      cmd /c $Installer /s
    }
    catch { 
      Write-Warning 'Unable to install Dell Command Update.'
      Write-Warning $_
      exit 1
    }
  }
}

function Invoke-DCU {
  # Check for DCU CLI
  $DCU = (Resolve-Path "$env:SystemDrive\Program Files*\Dell\CommandUpdate\dcu-cli.exe").Path
  if (!$DCU) {
    Write-Warning 'Dell Command Update CLI was not detected.'
    exit 1
  }
  
  try {
    cmd /c "$DCU" /configure -updatesNotification=disable -userConsent=disable -scheduleAuto -silent
    cmd /c "$DCU" /scan -silent
    cmd /c "$DCU" /applyUpdates -autoSuspendBitLocker=enable -reboot=disable
  }
  catch {
    Write-Warning 'Unable to apply updates using the dcu-cli.'
    Write-Warning $_
    exit 1
  }
}

# Set PowerShell preferences
Set-Location -Path $env:SystemRoot
$ProgressPreference = 'SilentlyContinue'
$ErrorActionPreference = 'Stop'
if ([Net.ServicePointManager]::SecurityProtocol -notcontains 'Tls12' -and [Net.ServicePointManager]::SecurityProtocol -notcontains 'Tls13') {
  [Net.ServicePointManager]::SecurityProtocol = [Net.SecurityProtocolType]::Tls12
}

Invoke-PreinstallChecks
Install-DCU
Invoke-DCU

Examples

.\UpdateDell.ps1

This example downloads and installs Dell Command Update if it isn't already installed. After installation, Dell Command Update will check for and install any Dell updates.

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Parameters

This script has no parameters.