ASUS Notebook BIOS missing uefi option and secure boot option

Discussion in 'BIOS Mods' started by adamnickster, Dec 16, 2015.

  1. adamnickster

    adamnickster MDL Novice

    Nov 27, 2012

    I've used this tool found on forum X550VB_mod_All from user thanh2h

    to add SLIC on my Asus notebook X550VB. Later installed windows 10. After that from bios disappear Option to boot legacy bios and secure boot option is missing too.

    Tried flashing bios with winflash /nodate still missing. In tool AMIBCP modify to display missing options and flashed from usb with method Ctrl+Home while powering on. Still missing.

    Is there any method to get stock bios ? without SLIC MSDM table etc... ?
  2. adamnickster

    adamnickster MDL Novice

    Nov 27, 2012
    #2 adamnickster, Dec 26, 2015
    Last edited: Dec 26, 2015
    I want to flas BIOS with AFUWIN (more flash options) i got error.

    READ - Ok
    ERASE - 3 - Error: ROM file size does not match existing BIOS size.

    but with ASUS winflash is flashing without problem same with EZ flas from UEFI.

    AFUWIN saved my existing bios with size 6144kB and bios size of downloaded from asus is 6146kB. Afuwin saved bios to file with size 6144kB also after flashing 6146kB bios from asus.

    in HEX compare found different areas in beggining of rom file.

    How can i flash bios file from ASUS website with AFUWIN?:g:
  3. xforce

    xforce MDL Novice

    Feb 23, 2011
    There's problem in nvram area. To add secureboot to menu bios you need use wbt or bt and change bits in cnfg zone.

    If you can reflash bios with fpt. I can help you. Send me your dumped bios.