Surface Pro 4 Bios modding / editing

[surfacepro]

Hello folks, not sure if i ended in the right forum category but I'm extremely interested in getting to edit the "bios" ( UEFI ) on the Surface Pro

Everything started when i cmd:

wmic bios get serialnumber SerialNumber

i wantedt o modify this value that is retrieved from the rom itself i assume.
Then i read about computrace at bios level, etc.

I read about FAU and DMIEdit but i can't seem to understand what i really need for the Surface Pro EUFI really....

Anyone that could help will do an amazing thing!!!
Cheers