Asus has posted a ton of bios updates:

Bios A7A266 1004 Final (=1004 - 02 Beta)
Bios A7V-M 1004 Final (13.04.2001)
Bios P4T-M 1003 - 03 Beta
Bios CUR-DLS - Series 1007 - 02 Beta
Bios CUSL2 - Series ( i815e ) 1007 - 01 Beta
Bios CUSL2-C(A/B) / CUEP2-M ( i815ep ) 1007 - 01 Beta
Bios CUV4X-E without OnBoard Audio 1003 - 08 Beta
Bios CUV4X-E(A) with OnBoard Audio 1004 - 08 Beta
Bios CUV4X-D / DLS 1009 - 02 Beta
Bios CUV4X-V 1002 - 07 Beta
Bios CUSI - Series 1008 - 06 Beta
Bios CUBX - Series 1008 - 02 Beta
Bios P3B-F 1008 - 02 Beta

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