14 minutes ago, Tibbles said:
Dual Bios motherboards usually have a small button/lever/jumper to switch between the two bioses, I recommend you consult your motherboard manual.
10 minutes ago, Tibbles said:
Yes it's a physical switch/jumper, much like the clear cmos jumper.
The point of having a dual bios is to remove the risk of the bios corrupting or experiencing similar issues. With a dual bios you are pretty much just able to overwrite the corrupt bios with the other working bios.
This is all wrong. Gigabyte DualBIOS is not selectable and can not be updated. It's basically a BACKUP BIOS. If the board can't POST it stops trying and instead initializes the secondary BIOS that it is certain works and that BIOS is used purely for recovery of the 'real' BIOS. The secondary BIOS is not writable to prevent end users from screwing it up.
OP: Nothing is wrong, the secondary BIOS can't be updated by normal means, it's not supposed to, don't try.