I have patched the ASUS UEFI GOP Updater tool so that it skips the compatible motherboard check. With this patch the tool will blindingly continue to download and flash your card. For SLI configurations each card must be flashed separately just like the original tool.
Disclaimer: This is my own work and has nothing to do with ASUS. Neither ASUS or I can be held responsible if you manage to brick your system with this tool. This is provided on a USE AT YOUR OWN RISK basis. If your motherboard is not compatible with UEFI GOP it will BRICK your system FOR SURE. No one can be deemed responsible for using this other than yourself. So do your research and be absolutely certain your motherboard supports UEFI GOP.
Instructions: 1) Download the original ASUS tool (see HERE), install and reboot. 2) Download the patched executable: http://www.necrosan.com/rog/ASUS_UEFI_GOP_Tool_patch/ASUS_UEFI_Nodens.rar (New host courtesy of Necrosan:)) 3) Extract the executable from the .rar archive in "C:\Program Files (x86)\ASUS\UEFI" while overwriting the stock one that is already there (You can backup the old one if you so wish). 4) IMPORTANT: Run the tool and leave it running until it looks like this: (Image at the end of the post due to a bug with the forum editor and image attachments) 5)Reboot and disable CSM:)
Special thanks to my testers: Fefquois and furrybob. Their help testing was invaluable as I do not currently have any system without an ASUS board in order to test myself.
Do not post on this threads questions asking if your X-Y-Z brand and model board is compatible with UEFI GOP. I do not have the time to do that research for you. Research your board yourself or do not use this tool.
If your system has an ASUS UEFI GOP supporting board then you do not need this. Use the original ASUS tool instead.
Extra Notes: A) On platforms with on-board graphics set init options to PEG first. B) If you are using Logic Virtu disable it prior to flashing.
@furrybob: It's quite possible that the UEFI GOP was compiled on the same date as the Legacy VBIOS. Does it work alright with CSM off?
EDIT: Also have in mind that I have absolutely no control on what the tool downloads for each card. All I did is make the tool think you always have a supported board with supported UEFI version. What the tool does next depends on what ASUS made it do (what version it downloads for each card etc).
As a sidenote: The tool output looks garbled like that because there are several checks in the tool that check the board and update the interface. The way I patched it goes after those functions so the interface still shows it's not supported while the tool keeps working and updating the interface on top of it. This is why the interface looks messy. I could fix that but it will take so much time that it's not worth it since the tool works fine as it is:)
I've flashed my "ASUS GTX660 TI-DC2T-2GD5" successfull on a "ASRock H77 Pro4/MVP" motherboard. The following vBIOS [80.04.4B.00.AS21] has been loaded from the ASUS servers - old one was [80.04.4B.00.AS12] .