MobileStudio Pro help me downgrade Insyde bios

Hello, I am trying to downgrade my Wacom Mobilestudio Pro 16 bios to an earlier version.
I get “image to be updated is not a secure bios!”

Two versions of same bios here in an open dir. (zip files)

https://www.cartoonmonkey.com/bios/
help!
cheers

This operation envolves risks and/or loose of system ID data, backups is a must also an SPI programmer maybe considered in case of bricked system.

Intel FPT tool maybe a solution, from ME11 tools package.
https://winraid.level1techs.com/t/intel-converged-security-management-engine-drivers-firmware-and-tools-2-15/30719/6032

EDIT: This is not a tool to “play with”, the linked post is to read and im not loosing my time teaching every step, to you or anyone else, users must know what their doing and learn it, if they desire as this is their own task only.
The RAR package has a folder named (F)lash (P)rogramming (T)ool… this will answer to your edited question on the tool location.

Ok, error 368 failed to disable write protection for the bios space. :-/

(I don’t think I’m able to boot to uefi shell on this system to try the flash tool that way.) No option for it in bios after disabling tpm security at any rate.
Any help nwith error 368? Write protection in the bios space.

Have you noticed a search box on the top rigth corner of the forum?
It works you know…

I suggested Intel FPT… i didnt said it would work or to be an easy task, start digging…
And you’re done here… good luck.