How to flash vBIOS of Asus 750 ti from macOS ?

[billyb]

Hi,
after posting about my graphics not working with Sierra, I have been told that I have to flash a vBIOS of another manufacturer to my GPU as the ASUS version of the 750 Ti doesn't work with macOS. Please can someone tell me how to flash a vBIOS and where I should get the vBIOS from as I really don't want to brick my card!!

Update:
I installed windows and flashed a new BIOS (EVGA) which was successful! I am now in the process of installing macOS back onto the SSD and I will update when done

 

[billyb]

Success! (need to get my other two monitors working with it now but my QHD ultrawide is working at full res no glitches!)

 

[slim.jim]

Success! (need to get my other two monitors working with it now but my QHD ultrawide is working at full res no glitches!)

Glad you got it worked out.

 

[billyb]

Update: It is working with all three screens!!! I think the vBIOS meant that one of the ports stopped working.
I now have a QHD ultrawide running off the hdmi out of the 750ti, and two 1080p monitors running off the DVI and VGA outputs - i originally tested with the primary DVI output which didn't work but now I'm using the secondary DVI out on the GPU and it's working well!