[Request] Asrock H67M - ITX BIOS Mod - Undervolting

Hi guys,
I’m trying to add few parameters to an Asrock H67M-ITX MB BIOS, not to overclock it, but to undervolt it, in order to run fanless.
In the past, i played with the same MB, but with different form factor, Asrock H67M-micro ATX BIOS, which had those parameters active.

I tried UEFITool PE32 Image replacement and MMTool replacement, without success.
Any clue or help on how activate/add those parameters on H67M-ITX MB ?
Thx

After few tests, the ITX MB was flashed with modded M-ATX bios, it works like a charm and added cool features.
But, the Sandy bridge-K CPU isn’t going lower than nominal Vcore, can’t figured out if it’s a MB or CPU limitation. Maybe an Ivy bridge could be a better option