1. RobrPatty

    RobrPatty MDL Expert

    Jul 23, 2009
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  2. RobrPatty

    RobrPatty MDL Expert

    Jul 23, 2009
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    #65469 RobrPatty, Aug 5, 2020
    Last edited: Aug 5, 2020
    Here is my setup for making DOS bootable USB stick.

    screenshot_1.png

    I then added unpacked mod to stick and booted to DOS.
    And still get this error message:
    Efiflash X470AOUG.F51
    This program cannot be run in DOS mode.
     
  3. Serg008

    Serg008 MDL BIOS/EFI Guru

    Feb 23, 2010
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    You are doing something wrong, Efiflash should be run in pure DOS, but not in DOS mode.
     
  4. RobrPatty

    RobrPatty MDL Expert

    Jul 23, 2009
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    I can't figure what I'm doing wrong. Have been doing this process for years.
    Prepare USB with freedos(fat32). Transfer modded files to formatted usb.
    Reboot to non UEFI usb and type flash.bat
    Can't be any simpler
     
  5. RobrPatty

    RobrPatty MDL Expert

    Jul 23, 2009
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    I even have issue with Phoenixtool 2.73

    screenshot_165.png
     
  6. RobrPatty

    RobrPatty MDL Expert

    Jul 23, 2009
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    I've tried everything to flash bios in dos even this. They all say can't run this SLIC file.

    bios.jpg
     
  7. Serg008

    Serg008 MDL BIOS/EFI Guru

    Feb 23, 2010
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    AMI utility does not works with this BIOS from Gigabyte (must use Efiflash.efi).
    Enter into the BIOS, set Fast boot to Disable, OS to Legacy and first try to flash the official BIOS F51 from pure DOS env.