hi there,
usually we recommend using the QFlash utility to update BIOS as there is less risk from using it. However, there are occasional instances where you have to use @BIOS usually if the new BIOS file is larger than the existing motherboard version, for example.
If you haven't done so you might like to check out the FAQ on BIOS updating here:
http://forum.giga-byte.co.uk/index.php/topic,2441.0.htmlhope this helps but if it doesn't then post back and we'll try to clarify things further.