This error indicates a hardware mismatch or a bad connection. Verify that the firmware image matches your processor chip exactly. If the chip matches, try powering the TV box with its power adapter simultaneously while connecting the USB cable to provide extra voltage. The Device is Stuck on the Boot Logo (Bootloop)

Use a toothpick to press and hold the hidden button inside the AV port, then plug in the power cord.

Flashing firmware is a technical process that carries a risk of permanently damaging your device. Proceed at your own risk. The exact steps vary depending on the firmware package you download.