looks like gigabyte put out an updated "F5" offical bios and they have a special "FLASHSPI.EXE" and Autoexec.bat included...so...no "Qflash" is my impression to get F5 flashed...might be the problem; that is the built-in Qflash program...if they changed the boot block and Qflash doesn't update that area, that would cause your bios to continuously to loop.