na MSI.com jsem našel BIOS pro KT3 Ultra2 z 24.2.2003

Support AMD Barton XP3000+ (FSB333) CPU (For KT3 Ultra2 Only)
-Add "CPU Halt Command Detection" item in the BIOS Setup
-Fixed ATI 8500 AGP card cannot be used

žádná revize tam psaná není

jen dodatek:
This BIOS is intended for MS-6380E PCB with KT266A & KT333 chipset. K7T266 Pro2 & K7T266 Pro2-RU don't use the same BIOS