Serial number changed

I dont know how but after a steamVR bug i lost PIMAX connection and i saw the serial number had changed to 100000000000000CN then to retrieve connection the only thing worked was to put the headset in DFU mode then to leave but after the serial number changed again to 100000000000001CN. Since my PIMAX work fine.
It s really strange.
Any idea ?

Hi, if you’re convenient at the present, I’m glad to provide remote assistance for you by skype: support@pimaxvr.com : )