HP620 F.20 68PVI - need assistance

Discussion in 'BIOS Mods' started by n1bs, Sep 12, 2014.

  1. n1bs

    n1bs MDL Novice

    Sep 6, 2014
    1
    0
    0
    Hi All,

    Trying to remove whitelist from F.20 bios of HP620 machine:

    Version: F.20 (12 Dec 2011)
    hp.com/pub/softpaq/sp55501-56000/sp55878.exe


    It's Insyde 2Mb Bios that can be easily parsed by Andy's PhoenixTools 2.57 and whitelist seems rely on 5EEE.. module, so no problem with whitelist in general.

    The problem seems related to some strange format of that bios, since ANY modification of module (even singe byte in string) results in soft-brick. When Andy's PT starts, it drops the following string to log file:

    EFI Firmware Volume Header at 20040 has invalid $SIG checksum

    It looks like utility unable to properly repack the bios after mod.

    Please help me to address this problem and we'll get one more useful bios for everyone who got bad luck with HP620 and it's dead wifi card :)

    Thanks in advance!