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

[@alejandrocapell2780]

Came back to this video because it's the first one that pointed me in the right track, and wanted to help others with this problem.
Simon has the right idea here but I had to do a few things differently.
Step 1 Go to Lenovo website > support and download the correct BIOS .exe
Step 2 Execute the .exe but only extract it , now find where it created the folder, mine was under C>DRIVERS>FLASH
(Like he mentions enable view hidden directories)
Step 3 Once in the files folder and having located winuptp64 right click it>properties and copy the address/path
(Dont close the properties window)
Step 4 Open cmd and type: cd + the address you just copied
Step 5 Now go back to properties and copy the file name, go back to cmd paste it and add at the end -sp

[@trdomain]

good job

[@heartofalegend]

Thanks so much. None of the other methods worked for my Thinkpad. The battery check kept coming up. THIS WORKED.

[@fotografm]

Glad it helped

[@dwang247]

Thanks. Just updated my T480s using this method to v 1.56 Bios. My battery isn't charging so working through all potential fixes until I buy another battery.

[@fotografm]

Lenovo business laptops are my favourites. For my uses they are great !

[@asuslaser8383]

x270 work! thanks

[@fotografm]

You're welcome!

[@tshedisoskosana9944]

Can you do the one about lenovo t540p with the battery whitelist,especially when using Second hand battery

[@fotografm]

I only have original Lenovo batteries. I know that for the x220, x230 etc there was a modified bios released by someone that allowed any batteries and other hardware to be used. Take a look here: www.bios-mods.com/forum/showthread.php?pid=141098#pid141098

[@2or3Witnesses]

Im buying a used T540p mint condition, put an 2tb m2 msata 2242 on it as Boot, and 2tb hdd and 2tb hdd caddy as storage, upgrade it to i7 4900mq, all works well, it boots, and then i update all using Lenovo Vantage.. when it update its BIOS itself.. its bricked itself! Black screen! 60 sec press button, coin cells removed, all nothing! i HATE LENOVO, and worst of all, im buying all that parts credit.

[@fotografm]

I don't think that Lenovo laptops are designed to have the CPU upgraded. How do you know if the BIOS contains the microdes for the new CPU ?