Here is my Nvidia Bios Flash Guide:
Edited out the link.
Mike!
I will not be held responsible for any mistakes on your part, if your card does brick, make sure you are ready with a seperate card to fix the bricked one.
First off anything you post here at THGF you are responsible for, after it is posted it is the property of THGF and Best of Media, where's the disclaimer other than for yourself?
If it gives you nonsense about a protected bios, type nvflash /? and find the flag for unlocking the bios, use it, then go to #2.
That nonsense sir, you sidestep, is the last step of protection to keep your warranty.
Whether you are aware of it or not, once you unlock the BIOS to be able to flash it, your Graphics Card warranty is legally gone, that should be the very first thing you warn THGF users about.
Once the graphics card manufacturer discovers you have unlocked the BIOS, they have every legal right to refuse honoring your warranty and if they do, there's nothing you can do about it.
I have BIOS flashed many GPUs, and your instructions are a little on the unclear side for the less experienced, you should always make a copy of your original BIOS, you didn't tell them to do that or tell them how.
Regarding your BIOS downloads you should always download more than just the one file, and have them on hand just in case of flashing failure, so in my opinion that guide is seriously delinquent.
You need to understand how the inexperienced will take your guide for it's cavalier easiness and totally screw up their card or cards.
IMO command line flashing a graphics card with the operating system running, is taking a big chance!
You yourself were lucky!
Regarding SLI setups, If you flash with a floppy it will auto flash the 2nd card, you should remove the 2nd GPU before the flashing procedure, if you do not want to flash the 2nd GPU with the same BIOS.
You should never flash the 2nd GPU until you are 100% positive the primary card is properly flashed, and operating exactly as you expect it to!
Your Nvidia Bios Flash Guide, needs serious work!
This is exactly why I voted No!
One other thing readers, unless your computer is on a battery backup system you take a chance for any BIOS flashing you do, not only GPU but CPU as well, any power surge, fluctuation, brown out etc. can cause BIOS Flash corruption and complete failure, BIOS Flashing anything is serious business not to be taken lightly!