Here are some tips to help you get the work done:
1. Remove the car’s Radio fuse and wait for 3 minutes.
2. Reinsert the fuse and simultaneously start the car’s ACC while you are pressing the reset button of the unit until recovery menu appear.
After a false upgranding from ΜΑΧ10 to ΜΑΧ11 due to incorrect file, I have a black screen with android logo only. I tried many times to get to the recovery menu without success.
