If your device type shows “null” or something similar, you are most likely: 1, Running the x64 version of mobileTabletOS. 2, Running it on a computer. Or 3, Missing drivers such as the audio driver, the WIFI card driver, or the graphic drivers. To fix the driver issues, please visit “http://mobilecomputers.com/drivers/mobileTabletOS/x64” and download the .sys file.