Alright, hopefully someone here can help me. I downloaded bios 1502 from Asus website into a USB stick. Got the file as 1502.ROM. Went into bios and load defaults. Reboot, went into bios and selected the usb stick drive. Then it says, "Unable to load drive or directory". I've tried all my other usb and nothing works. I'm doing this to upgrade to Phenom 2 940. Any suggestions?