I use the below script to audit BIOS versions on our Dell servers which outputs model, BIOS version and date.
looks here as well
http://vnugglets.com/2011/11/get-hp-firmware-info-for-hp-vmware.html
$report = @()
Get-View -ViewType HostSystem -Property Name, Hardware.SystemInfo.Model, Runtime.HealthSystemRuntime.SystemHealthInfo.NumericSensorInfo |
Foreach-Object { $row = "" |Select Name, Model, "BIOS Version", "BIOS Date" $row.name = $_.name $row.Model = $_.Hardware.SystemInfo.Model $biosTemp = ((($_.Runtime.HealthSystemRuntime.SystemHealthInfo.NumericSensorInfo | Where {$_.Name -like "*BIOS*"}).Name -split "BIOS ")[1] -split " ") $row."BIOS Version" = $biosTemp[0] $row."BIOS Date" = $biosTemp[1] $report += $row
}
$report | Sort-Object -Property Name | Format-Table -autosize