Bios Mods -The Best BIOS Update and Modification Source

Hi,

When i tried to downgrade the bios from F.2A to F.03 but it says "This bios file is not allow to flash. The flash process will be terminated", I tried changing [Bios_Version_Check] Flag=1 to 0 and does not work.

Current Bios F.2A (sp77491) : https://drive.google.com/open?id=0Bwtt9u...mU0ajFVZWc

Bios I want F.03 (sp57047) : https://drive.google.com/open?id=0Bwtt9u...XUybGdIRjg

Any help its appreciated!
Thank you!

Same problem here
Also tried win+b method, and its not working

Someone help please
Thank you!