Reply To: Digital Signage and Remote View on Android 4.2


Why don’t you try flashing an Android 5+ OS to the devices? You can start by checking if your device is compatible with the version of the Android you plan to install from . Then you can try searching for your ROM and boot loading software from XDA developers’ forums. This article might be helpful for you –  

Do proceed with caution as the process could break the device if not done properly.