Some users have recently had their accounts hijacked. It seems that the now defunct EVGA forums might have compromised your password there and seems many are using the same PW here. We would suggest you UPDATE YOUR PASSWORD and TURN ON 2FA for your account here to further secure it. None of the compromised accounts had 2FA turned on.
Once you have enabled 2FA, your account will be updated soon to show a badge, letting other members know that you use 2FA to protect your account. This should be beneficial for everyone that uses FSFT.
Specifically the 6800 Go Ultra bios. Turns out that Dell has placed a lock on the card and so far RivaTuner and Coolbits fail to allow the card to overclock, it just resets it back to default anytime you try adjusting the clock.
nvflash is the utility that does the flashing. Try OmniExtremeFX for modding the BIOS. That will allow you to modify the GPU/mem voltage and set clock speeds.