PAW1 Firmware update

1. When PAW 1 is shutdown, press and hold "Vol+" and "POWER"key at the same time to enter update mode.
2. Copy the "paw1.coe" to the root of the new mounted removeable disk with usb cable.
3. Remove USB cable and choose "YES" to update..
4. Wait till screen shows "Power off", restart to use the new firmware.
