Make sure that recovery is not possible by repeating the process several times.
- Press on until black screen.
- Press the power button three times in rapid succession. Try pressing 4 times too.
- Connect the gps to pc with the official mydrive connect program.
Some questions:
- Do you get to see how the gps stays on the black screen with letters?
- When you press the power button three times what happens?
If you want to try to install your navcore you can do it like this:
- Download the ttpkg package (Attention valid only for devices with a 5" screen): 12.075.3065980.84
- Save the package to your pc.
- Connect the gps to the pc.
- Open TTActivator.
- Make sure TT recognizes your gps.
- Go to the nav3 tools tab.
- Click on the box that I indicate: https://i.imgur.com/wWwkabZ.png
- Windows explorer opens and you must navigate to the location of the file to install.
- Double click on the ".ttpkg" package and let TTActivator act.
I do not recommend attempting to install navcore without having attempted drive recovery, with the initial process of this topic.