look at the location of the blue / silver capacitors on the right side of the circuit boards...even the position of the memory on the boards is different. Does that answer you question about using 780 block on 770?
Unfortunately, you're right, I've didn't noticed it.
Thank you very much for the answer.
Still remains the second question for AC
@AC: If not did you have in program to make a kryographics wb also for the 770?
Thanks in advance for the answer.