How to Reset Xhorse VVDI Key Tool Max/ Pro to Factory Setting?

Question: how to reset the Xhorse VVDI KEY TOOL MAX, the touch screen does not work.

Follow steps below to reset key tool max/key tool max pro:

Long press power button on the left side of the key tool max pro or key tool max.

Long press middle area for 2 minutes to reboot device

Back to main screen, press this button

Select Setting->Application->Xhorse app->Storage->Clear cache

After clear cache, log in app again.