Wait for the progress bar to reach 100% and turn green with a "Success" message.
If your device is running older security patches, it may contain open permissions vulnerabilities that allow unlocking without a total system wipe. zte zxv10 b866v2 unlock upd
While holding the button, plug the other end of the USB Male-to-Male cable into the of the TV box. Do not plug in the power adapter yet unless the PC fails to register the device. Step 3: Executing the Firmware Update Wait for the progress bar to reach 100%