I am using a Gigabyte mobo B75M-D3V with Intel i3 SB 2120 Ghz..According to the bios setup in the system the version is F3..but the Gigabyte support website states the bios version for this mobo is F5..can anyone advise please? I would like to upgrade to i5 IB 3570 which requires F5 bios version..Also how do I flash the bios F5 version?