Yes, you can use the AwinFlash or AFUWIN....I suggest Flash Bios in DOS using ADUWIN and Bootable USB FLash Drive. And the certificates which you have will not activate Windows 7...we have to wait on that.
Thanks Flashed my ASUS P5N7A-VM with the modded one and it works like a charm with RTM and the newly leaked key here at mydigitallife ;D thank you so much