GiGaДръв BIOS прошивка-model 7ZXE

I want control the CPU Vcore but the BIOS not support this option.I can`t control any other voltage in the official F9 BIOS and I can`t find any program who can mod the AMI BIOS.If any can mod this bios this is the link for the latest official FBBIOS :
tw.giga-byte.com/Motherboard/Support/BIOS/BIOS_GA-7ZXE.htm

this is the info for my BIOS:

AMI BIOS GA-7ZXE F9
2M Bits (00000-3FFFF)
SST 39SF020 /5V

Thanks