Thank you but it didn't work
everytime it shows me on the first boot this msg : the bios hasrecovered its identity data from the embedded controller due to data mismatch
i think i need to get a fresh EC with low version to be able to downgrade the bios and patch it.
i tried to extract bios from update but i can't figured out how to downgrade the EC from update
is the anyone who can provide me a fresh EC
this is my original both BIOS+EC after my attempt to downgrade...

Thanks but it still locked...

THANK YOU BUT IT NOT WORKING STILL LOCKED...

hello , i need help to unlock HP Elite Tower 800 G9
motherboard : SCRABBLE REV : B M11 FMB-2202
Serial Number: CZC315715W...