How to Fix Xhorse Condor Change Date But Goes Back?

 Problem:

I changed the xhorse condor mini plus date but it goes back the next day. How to fix it?

Solution:

The button battery on the motherboard is dead. Remove the case and replace the CR1220 battery on the motherboard.

The method can be applied to Xhorse Condor key cutting machines with serial number KM02, KM03 and KM05.