Asus have released a couple new bios files for the A7V266 motherboard:
A7V266 version 1003
A7V266-E version 1003e Other BIOSes: Bios TUSL2 1011 Final (=1011 - 04 Beta)
Bios TUSL2- / CUSL2 - Series ( i815e ) 1011 - 04 Beta
TUSL2-C / CUSL2-C ( i815ep ) 1011 - 04 Beta
Bios TUEP2- / CUEP2 - Series ( i815ep ) 1011 - 04 Beta
Bios CUR-DLS / DLSR 1011 - 06 Beta
Bios A7A133 / A7A266- Series 1010 - 01 Beta
A7V266 version 1003
A7V266-E version 1003e Other BIOSes: Bios TUSL2 1011 Final (=1011 - 04 Beta)
Bios TUSL2- / CUSL2 - Series ( i815e ) 1011 - 04 Beta
TUSL2-C / CUSL2-C ( i815ep ) 1011 - 04 Beta
Bios TUEP2- / CUEP2 - Series ( i815ep ) 1011 - 04 Beta
Bios CUR-DLS / DLSR 1011 - 06 Beta
Bios A7A133 / A7A266- Series 1010 - 01 Beta