You can refer to the tutorial on how to replace GOP to delete GOP：
https://www.overclock.net/forum/67-amd/1…x570-rx580.html
"magic" UEFI:
(done by lordkag, tested by gupsterg, …copied by me)
For these GOP UEFI files the signature check was overridden. But they also lost their signature, so no secure boot is possible.
The files are universal, they can be used with all R9/RX up to the 580 (as long as the device ID is adjusted accordingly); with Vega a new UEFI was introduced.
Version 1.60 doesn’t actually know a 580, but it works just as well, since the device ID for 470/570/480/580 is identical.
Search for the GOP UEFI part in the BIOS, then copy the complete content of the GOP.efirom and overwrite the original one. Do not change the the length of the rom file!
AMDGOP1.60.0.15.50
the new versions have a length of 0xE600; the remaining bytes of the original UEFI/GOP have to be overwritten with “FF” placeholders if necessary. (0x200 length max)
AMDGOP1.63.0.15.50
AMDGOP1.65.0.15.50
AMDGOP1.66.0.15.50
AMDGOP1.67.0.15.50
AMDGOP1.69.0.15.50
–EDIT–
You can find the gop in hex ,and fill them to FF and gop was erased .
@gloobox - do you need vBIOS edited this way? If yes, attach