Hello everyone, my navigation went to a blank screen with the error message blinking from 50 to 51 and back again. I tried fixing it with the dual layer disk file but it didnt work. So i decided to change the entire radio out. I ordered the std ac only to realise that the connections are not the same.... Im stuck, ive seen that people have changed thier navigation screens for an aftermarket... But need help on how. Anyone who can help is very appreciated.