Factory Reset from firmware1.2.71.
Starting from Firmware version 1.2.71, all Z7+ and Zx / 5G series devices support the following reset method:
Built-in Factory Reset: Destructive
**Factory resetting the device will delete all user data and restore the system back to factory state.
1. Remove power from the device.
2. Re-insert power WHILE simultaneously rapidly pressing the red button on the remote
3. The front status light will start to blink red and green.
4. Stop pressing the red button
5. Press 1 on the remote and wait for the reset procedure to complete
This built-in method is more convenient and does not require the use of the USB file.
The USB file method also works if needed (if firmware version cannot be determined)