| Bios name | Remarks |
| AV42S002 | Initial release. |
| AV42S003 | Checksum: 8500H Date
:11/22/2002 1. Fixed Power Resume function fail. 2. Fixed CMOS RTC auto reseting problem when replaces DDR266 to DDR333. |
| AV42S005 | Checksum: 2400H Date
:01/06/2003 1. Fixed some DDR compatibility issue. |
| AV42S007 | Checksum: 64FDH Date
:06/10/2003 1. Support P4 D1 Core Stepping CPU. (Northwood) |