This guide reckons you can revert back to the EFI bios.
http://forums.tweaktown.com/gigabyt...ngrade-uefi-bios-u1h-back-award-bios-f12.html
http://forums.tweaktown.com/gigabyte/48962-unable-update-bios.html
http://forums.tweaktown.com/gigabyt...ngrade-uefi-bios-u1h-back-award-bios-f12.html
http://forums.tweaktown.com/gigabyte/48962-unable-update-bios.html