Asus have released new BIOS files.

Asus Bios A7V333 1006 Final (=1006 - 04 Beta)
Asus Bios A7N266 / A7N266-E 1002 - 01 Beta
Asus Bios A7N266-C 1002 - 01 Beta

Hit Read More for your download. Asus.de direct link