Helo, I tried to reset pin to my pioneer avic F840BT because I bought the car with this navigation and some mechanic get down my battery after that navigation ased for the code wichi I didn't know. I tried to enter in supermode with some files from google drive pioneer ( Condi's hack mode install via testmode) which I found here on avic411.
First time navigation boot in some menu with 2 options ( some file from sd card and from internal memory), i didn't know how to get out and I get down battery again, after that it asked for code again, I tried again with this card, same menu but I tried to remove again battery and after that my pioneer didn't started, now it is totally bricked, no light no sound.
What can I do in this case to recover it ? 