BIOS Mod request to unlock voltage control Asus GL703GM

I used ThrottleStop to undervolt my CPU. I was on BIOS version 310 during that time. Some days ago, my BIOS got automatically updated to version 314 and voltage control on TrrottleStop is locked. I even tried IntelXTU and the control is locked over there too. I guess ASUS locked from their BIOS update. I managed to downgrade BIOS to version 311 and see if the control is unlocked, it didn’t help. And I am unable to get old versions of BIOS (v310 and below) from their website and seems like they removed them too.

Without undervolting, laptop heats up too much. I am posting here to know if someone can help me unlock the voltage control by modding the BIOS. Thank you.