Similar to finding the Dell Service Tag via the command line, we can use WMI to retrieve the BIOS Version.
This is useful for finding out whether your PC is up-to-date with the BIOS revisions provided by the manufacturer.
Command Line
wmic bios get smbiosbiosversion
Powershell (Local)
(Get-WmiObject win32_bios).SMBIOSBIOSVersion
Powershell (Remote)
(Get-WmiObject win32_bios -computer COMPUTERNAME).SMBIOSBIOSVersion