Z87X-OC MAIN BIOS can't be use

[Mashiro]

I've updated the MAIN BIOS of MB: Gig Z87X-OC by gigabyte apps in window with BIOS rev.F5q and it show Pop-ups "Read fail..." (I can't remember a full of that word), then I restart my PC and it can't be use the MAIN BIOS to do anything after that and always make sound "peap".

Could you please help to tell me how can I resolve that? Thank you.

[Svarog]

When i went from F3 to F4 it gave a message that the Main Bios was corrupted, but it automaticly restored it with the Backup Bios.

See if you can force it use the Backup Bios with the switches.