You may want to know:
How to update the bios? Please click here.
Besides downloading the bios file, you also need the Flash Utility to flash bios rom. (For files before Aug 2001)
Update CPU Micro code to support Phenom CPU and Athlon 4X50 series and Sempron X2 CPU. (The S3 return fails when used Phenom CPU, this issue is chipset issue.)