[REQUEST] Switchable graphics for HP Pavilion g7

Hello, I need to be able to switch to fixed scheme via switchable graphics menu. It seems to be hidden, though. Also, I know little about coding and tweaking hardware. You, guys, are my only hope!

HP Pavilion g7-1255sr
http://h30641.www3.hp.com/pub/softpaq/sp...p60864.exe

People say it's harder to unlock 60xxx versions. If that's true, can I downgrade my BIOS version, to make it easier?

Thanks!