| Bios name |
Remarks |
| AV40SA04 |
Date code: 12/21/2001 checksum: 3e00h Initial Bios for AV40S. |
| AV40SA05 |
Date code: 01/23/2002 checksum: 0100h For VIA suggestion of P4X266A. |
| AV40SA07 |
Date code: 05/07/2002 checksum: 0500h 1.Fix P4 Celeron 1.7G show as Pentium 4 1.7GHz |
| AV40SA08 |
Date code: 07/05/2002 checksum: FE00H 1.Improve P4x266a stability based on VIA's suggestion. |