Phantom 4 rtk firmware update July 8, 2019 16 32 64 128 Phantom 4 rtk aircraft firmware update Phantom 4 rtk remote id firmware update Dji phantom 4 rtk controller firmware update Dji phantom 4 rtk firmware update Actualizar firmware phantom 4 rtk Phantom 4 update firmware Phantom 4 rtk camera settings Phantom 4 rtk linking