The screen will go black, then show a progress bar or a spinning circle.
| Problem | Likely Cause | Solution | | :--- | :--- | :--- | | | Files not in the USB root directory | Reformat USB, copy files again (not the folder). | | Update freezes at 50% | Corrupted download or bad USB sector | Download firmware again. Use a different USB 2.0 drive. | | Screen stays black | Incompatible hardware (Tricolor unit) | Panic stop . Turn car off. Wait 10 min. Try to boot into recovery (Hold Radio + Menu). If failed, go to dealer. | | Bluetooth still glitchy | Residual old cache | Perform Factory Reset again. Disconnect car battery for 5 minutes. | | Reverse camera lag | Known minor issue in 1.0.13.1 | Downgrade to 1.0.12.1 or accept 0.5s lag. No fix exists. | upgrade medianav 9.1.3 to 1.0.13.1