No. You actually have to go into the command prompt but that article explains what to do when you get that error message.
I've had 3 different 6950's (HIS, XFX, and Powercolor) and every single one of them I had to do the extra command prompt step. The article provided explains what to do.
Taken from that article coozie7 provided:
If you get an error like ID mismatch or Could not erase ROM, then you'll have to do some extra work in a Windows command prompt (or DOS): Run atiwinflash -unlockrom 0 followed by atiwinflash -f -p 0 bios.bin where bios.bin is the path and filename of the HD 6970 BIOS you downloaded.