Keydiy FGB25 5D Key No Frequency After Generation Solution

Problem:

Generated and made Keydiy KD FGB25 MQB49 5D dealer key with KD-X4 successfully. But cannot detect frequency with KD-X4. Tried read frequency with xhorse device, still no frequency. Any solution?

Solution:

Need to program and learn key in car first.

The frequency can only be detected after the programming and key learning in car are completed.