: After the "Success" message, unplug the USB and reconnect the box to your TV. The first boot may take 5–10 minutes. Troubleshooting Common Issues How to upgrade firmware android tv box MXQ 4K pro
A second confirmation warning regarding data loss will appear. Select again to trigger the automatic installation process.
While holding the reset button, connect the TV box to your PC using a USB-A to USB-A cable (usually the port closest to the SD slot). Start Flashing:
