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Thread: Force revert to older bios - X99 Gaming 5p




  1. #1
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    Default Force revert to older bios - X99 Gaming 5p

    Hello - I made the mistake of moving to the F21a from F2f bios on my Gigabyte X99 Gaming 5p. Until now, I've been overclocking at 4.25 and 4.37 very well at fairly low vcore - around 1.2. Now, with the same settings as before, things seem much less stable. When I try to reflash using a bootable USB, it prevents me from doing so and stops the process.


    In the case of this bios, it says "This BIOS prohibits updating to earlier version BIOS". GIGABYTE - Motherboard - Socket 2011-3 - GA-X99-Gaming 5P (rev. 1.0)


    Any ideas on how to initiate the backup BIOS on this board - there is no switch. Thanks!
    Last edited by toran0x; 02-01-2016 at 10:53 PM.

  2. #2
    stasio's Avatar
    stasio is offline GIGABYTE Elite
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    Default Re: Force revert to older bios - X99 Gaming 5p

    First....
    Same setting should not be set for any new BIOS.
    Try to adjust inputs.

    Second....
    To initiate the backup BIOS, you can use method bellow:
    (1) The PC has to be off.
    (2) Press and hold down the power button. Don't let go.
    (3) The PC will turn on. A few seconds later, the PC will turn off again by itself.
    (4) Let go of the power button at this point.

    Next start, the backup BIOS will take over.

    Third....
    You can flash back BIOS with FPT-Win32/64- X99 in Windows mode:
    https://www.mediafire.com/?j2157i66u6xwnwm
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  3. #3
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    Default Re: Force revert to older bios - X99 Gaming 5p

    Quote Originally Posted by stasio View Post
    First....
    Same setting should not be set for any new BIOS.
    Try to adjust inputs.
    Thanks - understood. Just didn't expect the change to be this drastic - the wrong way.

    Second....
    To initiate the backup BIOS, you can use method bellow:
    (1) The PC has to be off.
    (2) Press and hold down the power button. Don't let go.
    (3) The PC will turn on. A few seconds later, the PC will turn off again by itself.
    (4) Let go of the power button at this point.
    Next start, the backup BIOS will take over.
    Tried this and a few different variations - nothing initiated backup.

    Third....
    You can flash back BIOS with FPT-Win32/64- X99 in Windows mode:
    https://www.mediafire.com/?j2157i66u6xwnwm
    I'm not familiar with FPT when compared to QFlash. Would you mind explaining what it does different? I'm intrigued bc QFlash won't let me downgrade the BIOS.

    Thanks for this! I've been trying to stabilize my system with the new F21a BIOS - it's working out ok, but I'd love to get F2f back.

  4. #4
    stasio's Avatar
    stasio is offline GIGABYTE Elite
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    Default Re: Force revert to older bios - X99 Gaming 5p

    Unzip file "FPT-Win32/64- X99"....inside you have ...how to flash your F2f BIOS (must rename to bios.bin) ....in Windows OS (not Q-Flash/@BIOS or in DOS).
    GA-Z170X-SOC Force , Kaby Lake...
    GA-Z97X
    -SOC Force ,
    Core i7-4790K @ 4.9 GHz
    GA-Z87X-UD3H ,Core i7-4770K @ 4.7 GHz
    G.Skill F3-2933C12D-8GTXDG
    @ 3100 (12-15-14-35-CR1) @1.66V
    2xSSD Corsair Force GS 128 (RAID 0), WD Caviar Black SATA3 1TB HDD,
    Evga GTS 450 SC, Gigabyte Superb 720W
    XSPC RayStorm D5 EX240 (Liquid Ultra)
    NZXT Phantom 630 Ultra Tower
    Win 7 SP1 x64;Win 8.1 x64;
    Win 10 x64

  5. #5
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    Default Re: Force revert to older bios - X99 Gaming 5p

    Quote Originally Posted by stasio View Post
    Unzip file "FPT-Win32/64- X99"....inside you have ...how to flash your F2f BIOS (must rename to bios.bin) ....in Windows OS (not Q-Flash/@BIOS or in DOS).
    THANK YOU!! This worked.

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