Lanner 7551 BIOS Modification

Discussion in 'BIOS Mods' started by newbii2, Oct 18, 2019.

  1. newbii2

    newbii2 MDL Novice

    Nov 16, 2017
    I have a Lanner MB-7551 board which is retired from a recent unsuccessfully network project, it has 6 GE ports so it makes sense to me to make use of it for other home firewall/router project.
    However then I found the BIOS settings are locked by supervisor password, I can't get into the system to turn off the watchdog which will reset the system every few minutes.

    I have read a few threads in different forums and I think I will need to get a full dump of the flash chip from another board without password and flash mine.
    Or if I can change the watchdog switch setting in NVRAM and disable the watchdog ?

    Any help on this is appreciated.

    More information on the board:
    Winbond 25Q64FVS with a SPI interface
    I used AFUDOS to backup the BIOS and turns out to be a 6M file.
  2. DM500

    DM500 MDL Novice

    Jun 28, 2017
    Did you have any success? I have 3 units and I am stuck with the same. Let me know if you have found any solution to this.