You will have to contact EVGA directly

What they said.
 
I received mine pretty quickly, and it updated without a hitch. I turned off CSM in the ASUS motherboard firmware, and now it's using Windows 8 secure boot without any problems.

I need a BIOS update for both of my GTX 680 Classified video cards so I can disable CSM in the UEFI BIOS of my mother board.  This results in much faster boot times.  Maybe I wasn't clear in my email to EVGA.  Here's the response I got from the EVGA Tech:
 
Hello,
I do apologize for the inconvenience, but a bios update is not needed in order to deactivate the csm within your bios. To enable csm a bios is needed what I would recommend is taking your gpu out and try disabling the csm option. Is there any way that you can use your on board video or an alternate gpu to commence this step? 
Regards,
EVGA Support

James, it's just the opposite.  I want secure boot and no CSM.  CSM deals with legacy BIOS items.  If I update my GTX 680 BIOS to a UEFI GOP, then I can disable CSM and my machine boots in about 7 or 8 seconds.
 
BTW, I did receive, via email, a BIOS update for my GTX 680 cards.  Works perfectly now.  Thank you, EVGA.
 
Now, it's time for a couple Maxwell cards in this rig.  The GTX 680 card I am using in my X79 rig is temporary.  I want two GTX 980 cards (preferably customized ones like, say, a Classified version).  Waiting to see what EVGA puts out for us.  Then the GTX 680 goes back into the X58 rig.
 
Geez, now we've got X99 out.  I have to find another place in the house for one. 

Lestatt1
Wow, just spent an hour trying to get this damn uefi bios mailed to me, they said they can't mail it out because antivirus eats it up. Never again am I buying evga. So pissed off

Hello Lestatt1! I am sorry that you have had difficulty with obtaining a UEFI BIOS. I will be e-mailing you directly to help with providing you the BIOS files. Please check your e-mail inbox shortly.

dmoheban
Why don't you just try to mod the bios with the GOP-Update tool on Win-raid.com? Its suppose to add UEFI support to old firmwares. 
 

 
Link?

ty_ger07

mBrane

dmoheban
Why don't you just try to mod the bios with the GOP-Update tool on Win-raid.com? Its suppose to add UEFI support to old firmwares. 
 

 
Link?

Can't say that I would recommend it, but here is the link:


I would recommend getting the file from EVGA directly. Less chance of issues that way, and a file from EVGA won't negatively affect your warranty (if you still have one).

Instead, do this:

SpenserA
Register the card to your account, email in your request and include your serial number to confirm it is for the correct card, and we can send you the UEFI update.

Thx, ty_ger.  Looks like the link was already moderated (or you Rick Rolled me, dunno).  :)  Win-RAID was pretty difficult to search effectively, so I submitted a request directly to EVGA.  Hoping they're responsive to this.  Again, much appreciated!
 

ollyk22
Can anyone help me with this please? I want to upgrade but I am not having much luck running NVflash. I try to run as above but the switches arn't recognised with new version, and without switches it seems to go through a process but there is no report and the other screen shuts too quickly.

Any ideas?

If the vbios is built specifically for your card all you have to do is drag and drop the file onto the nvflash/nvflash64.exe.