How to test a touchscreen

How to test the touchscreen:

A. Please download this file to USB thumb drive: https://1drv.ms/u/c/574ce030a7175ee2/IQDiXhenMOBMIIBX5sQIAAAAAX-BZr50mXp8zoKM9zeUlY4?e=WJgYrc 

B. Connect the USB thumb drive to the radio, install the touchscreen test app and test it per this video: https://youtu.be/99PmAunlVtE 

C. Take a video show the process.