There are 2 methods for updating the BIOS using Instant Flash.
The Flash Memory Writer utility can not be suitable for all ASRock motherboards. Please use the Flash utility which is included in each BIOS file to update its BIOS. Also ASRock motherboard MUST use ASRock's Flash utility to update BIOS, those uncertified BIOS flashing tools will cause motherboard damage.
If you encounter problems while updating the new BIOS, DO NOT turn off your system since this corrupt BIOS might cause your system failed to boot up. Just repeat the process, and if the problem still persists, update the original BIOS file. If the Flash Memory Writer utility was not able to successfully update a complete BIOS file, your system may not be able to boot up. If this happens, your system will need service.