L540 support
BangL opened this issue · comments
hey!
i tried using this on my L540, but it did not work and continued to beep after signing my custom rom.
i then verified my original unmodified rom, which i extracted from the device before tinkering with it. this is the result:
❯ ./verify.py /mnt/Storage/Nextcloud/LenovoL540Bios/mybios/L540original_1.rom
INFO: Found public key modulus at offset 0x7aed16
INFO: TCPA block found at offset 0x6c3a00
INFO: Volume offset: 0
INFO: Volume size: 2686976
ERROR: TCPA volume hash mismatch
TCPA volume hash: 04fd6debcdf6d9dd3ecba3e799ee21435e0fef4e
Actual volume hash: 2717cd0ff9c657e98b1f89cd12f64e5a0b08db43
SIGNATURES INCORRECT!
so, it seems like the signature check on L540 differs from other devices somehow.
any chance to provide support for L540 as well?
this is my original rom with an actual valid signature: link removed, which gives me a false "SIGNATURES INCORRECT!" with your tool.
and this is my modded rom file with an invalid signature, which i would like to sign: link removed
would be awesome if you could use this to debug, so i can get a properly signed and therefore beep-less modded flash onto my device as well <3
Hi,
I think I figured out what the problem is, and opened PR #2 with what I think is the correct fix. I don't own an L540 myself, so please leave feedback whether it worked for you.
tested and confirmed! booting absolutely beepfree now :)
thank you so much <3