Lenovo Thinkpad T540P Bios Upgrade with no Battery and Other Settings

Lenovo prevents BIOS upgrade when no battery is present. This is a good idea as power failure during BIOS upgrade can destroy the motherboard. If you follow my method shown in this video you do so AT YOUR OWN RISK. I accept NO responsibility for problems caused by bypassing this Lenovo safety feature. Also covered is how to make "Fn key primary" when this setting is missing from the BIOS, and how to connect an SSD to a motherboard with a damaged SSD SATA port connector. Here is the command to start the BIOS update without batter presence check C:\ProgramData/Lenovo/SystemUpdate/sessionSE/Repository/gmuj35us/WINUPTP64.EXE -sp