Xtool PS90 - Language, Units, and Bluetooth Pairing

PS90 Diagnosis System
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Units: Select unit of measurement. Users can select Metric or British Unit.
Bluetooth：
a. Select the VCI serial number and PS90 will pair with it automatically when
running PS90 APP.
b. How to pair with another device?
Unpair the current device first, and then pair with the device you want
Click Setting, and turn on Bluetooth