How to update my Zenacasa Counterfeit Detector? 
1. Download the software (Download button)
and put it on your USB key.
2. Then, plug your USB key to the USB output of your detector.
3.Press the ON/OFF and REP/CLR buttons at the same time
4. Your screen will display that the update is in progress and then come back to normal screen. It's done !

Tutorial video