I've updated my bios to the latest version and found that the bios that was installed at default was better than the latest. I am using Phenom II X6 1090T with Asus M5A97 R2.0, 2x 4GB Kingston HyperX. I could overclock with the default bios version but after updating my bios every overclock failed. so I'd like to downgrade my bios but couldn't downgrade in the EZ flash menu in bios. I try the AI Suite but there seems to be no option at all. any help would be great