BIOS Update Help

ASUS Update isn't allowing me to update my BIOS. I downloaded it from the ASUS website for the matching mobo and its sitting on my desktop. When I try open ASUS Update to install or flash it or whatever it says, "The model of the bios image doesn't match the bios rom currently present." The current bios is rom type: PMC 49FL004T LPC, model: k8v-mx, version: 1006.003

Comp Specs:
OS: WinXP
Processor: Athlon64 3200+
Mobo: ASUS K8V-MX
Memory: 1gig (2x512) Corsair DDR400
Vid Card: ATI Radeon X850Pro 256MB AGP 4x/8x
Power: 460W Enermax
6 Cooling fans (1 processor, 1vid card, 2 powersupply, 2 case)

Well, is your downloaded BIOS for K8V-MX? It may be that your specific motherboard revision isn't supported by the BIOS flash program. Try some DOS utility supplied by ASUS or UniFlash.