Downgrade gigabyte UEFi

[zongyf]

Hi.

Recently updated to the F20 version of the bios for my z170xp-sli board.

However I lost the ability to base clock overclock and when I tried to revert back to the F6e (moded) version, my bios told me that I can't update to an older bios version.

The website said that I can't revert back to older BIOS when I update to F20.

I know in  the past people have successfully forced a bios downgrade with z87 mobos, but I have no idea whether and how it will work on z170 boards.

Thank you in advance.

[zMeul]

check if the back-up BIOS has been updated too

check manual how to

[zongyf]

Just now, zMeul said:

check if the back-up BIOS has been updated too

check manual how to

it was, I tried to reset

 

[zMeul]

1 minute ago, zongyf said:

it was, I tried to reset

reset?! reset does nothing

you need to revert the main using the back-up

[zongyf]

Just now, zMeul said:

reset?! reset does nothing

you need to revert the main using the back-up

ok I will try thanx

 

[zMeul]

this is what I found (the manual is of no use): http://www.overclockers.com/forums/showthread.php/697533-GUIDE-Forcing-backup-BIOS-on-Gigabyte-motherboards

Quote

Method #1:
1. Shut your PC down (if you're reading this guide, than your PC isn't working anyways) 
2. Hold the power button until the PC starts and shuts down again
3. Press the power button again, your backup BIOS should kick in now and should re-flash the main BIOS if there's anything wrong with it.

Method #2:
1. Shut your PC down
2. Hold the power AND the reset button for about 10 sec, than release.
3. Backup BIOS should kick in anytime soon now.

Method #3:
Had to use this one in order to get my 990FXA-D3 working again. Backup BIOS kicked in using method #2, but I was back to the good ol' no signal state once the procedure finished..
1. Short out pins 1 and 6 on the main BIOS chip (pin #1 should be marked with a red dot or whatever)
2. Tell a friend (or a relative) of yours to press the power on button
3. Remove the ghetto-like jumper you're holding between pins 1 and 6 as soon as you hear a beep.
4. Backup BIOS should kick in again and everything will (hopefully) be fine.