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Can i get general instructions for modifying AMI bios ?

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Hi, i have a lenovo m73 tiny model 10AY, want to patch the whitelist.
But i think it'd be more educational to learn how to patch it, rather than simply request it.
The bios can be downloaded here:
fhjt78usa.zip https://support.lenovo.com/au/en/downloads/ds038325
It has two large files that i suspect are the bios:

IMAGEFH.rom (7mb)
FHCT36A.bin (131kb)

Inside the rom file, there are plenty of subsections starting with 'MZ' which i assume are executable files? I'm not sure what to make of them.

I searched for the boot error text 'Error 1802: Unauthorized network card is plugged in' as well as sub-strings of that text, but couldn't find it (both in ascii and utf-16). So i'm kinda stuck.

I believe one of the whitelisted cards is: PCI\VEN_8086&DEV_08B2&SUBSYS_42628086&REV_73


Any suggestions appreciated Smile

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