Ok...I just checked both my [ 4GB 670GTX SC ] firmware on NVCP & I see this
1st- Older  GPU > 80.04.4B.00.70
2nd- Newr GPU > 80.04.4B.00.71 > Maybe on Disc ?
My question is this where can I get the Newer firmware >80.04.4B.00.71<  & how to installed it while on SLI?

Look at post 276 for your answer  :)

I had several flickering and graphical issues with the 4b bios so I went back to the 1st flash for now. 

It does not seem to suit all rigs, I left mine on the original bios and am happy with that

Hello all.  Long time lurker but finally have something I couldn't find an answer to on my own.
 
I just bought a second GTX 670 FTW 4GB and in the Nvidia Control Panel it shows as having a newer Video Bios version of 80.04.5C.00.70.  The one I already had that is about one month old has 80.04.4B.00.70.
 
Both cards work just fine and I get respectable benchmarks from them.  There isn't an issue but I was wondering if having them with matching bios versions would have some kind of benefit that I am overlooking.  Also, would like to know what the newer bios actually does compared to the older one.
 

I had that same question with my 670's & I was told its ok not to worry,  one ends with
80.04.4B.00.70. & the other .80.04.4B.0071
I have no problems with my SLI But I would like to get the latest 80.04.5C.00.70 for both
I'm surprised its not in forums for the grab I guess its not that important?
 

At the start of this thread BDM post
 
NVIDIA Firmware Update Utility (Version 5.127). 
This DOS based software can be used to upgrade your NVIDIA video card BIOS flash ROM. You can also use it to create a backup of the BIOS on your video card
 
So you can if you wish save the latest (and or both bios's) and flash the latest to the card with the oldest.
 
TBO I think it would be a little anal, minor tweaks ocour with very little between them and the staff here have said its of minor importance and any significant changes will lead to the new bios being made available

TBH most all card for sometime now have already had this done at eVGA and the need to do this for most any cards bought now is little to none .If anything the Bios on cards sent out now are more up to date .

Hey guys, I have the 02G-P4-2675-BR. Is there a BIOS update for this model? It's the Superclocked+ model.

Pacobart

Hey guys, I have the 02G-P4-2675-BR. Is there a BIOS update for this model? It's the Superclocked+ model.

Good Question