[REQUEST] Asrock G31m Vs2 Vcore Unlock

Hello, I bought this Asrock G31M-VS2 and the bios is updated to Version 1.20 (horrible motherboard btw) i'm just thinking if there's anyway to unlock Vcore setting in bios or add it if possible, my CPU is Dual core E5700 3.0GHZ and i can't even overclock it to 3.1GHZ and i think it's all because of the Vcore which is only 1.25v

http://www.asrock.com/mb/Intel/G31M-VS2/...ad&os=BIOS

Thanks in advance.