Acer M5910 - Mobo : H57H-AM2 v2.0 - Unlock Request

Hi, i found version v1.0 for same mobo posted:
https://www.bios-mods.com/forum/Thread-Acer-H57H-AM2-V1-0-unlock-and-module-upgrade

But nothing on version 2.0, is there possibility of hidden oc options ?
I have p01-a3 bios version, i found updated version p01-a4 on acer site, does that have unlocked bios settings ? Or should i stay with p01-a3 and try unlock this?

thanks in advance!