How to flash GTX 770

I have a 770 that the last guy who had it wanted to flash it to a titan because 780's could be and its only one number difference so it should totally work. I need to flash it how do I do that. I have the rom, I have nvidia flash... Do I do it from the command prompt in windows? Is there a specific way?

i highly doubt that would work
and btw
there is no way to flash a 770 to a 780 afaik
@Fouquin is the master tho
I simply played with a few ES cards bios flashing with his help lol

Definitely impossible. GTX 770 is a GK104 core, Titan, Titan Black, GTX 780, and GTX 780ti are GK110. It's a physically different core, the extra shaders and such aren't there to be enabled. If you had a GTX 760 you could theoretically attempt to flash it to a GTX 770, but unless you see a guide for your exact board, it's locked down properly and you can't upgrade it.

Remember, if the extra parts are disabled there is a significant chance it's because some of them don't work. Also, dinking with the VBIOS can brick the card if you flash the wrong rom.

As others have said you cant flash it to a 780, but you can flash it to a 680.

I did this to my 680s and I would not recommend it.