Focbox Unity dead by Update?

Hey guys, i updated my focbox unity by the unity tool and reconfigured everything. So far everything went fine , remote worked , board worked e.g.)

The next day I wanted to ride but the turn on button of the unity did not react.

To i opened the enclosure today and thought it‘s maybe the switch but nothing to see, also tested a second switch on the two mom ports but Reaction at all. The unity lights up when it get‘s power (I have a Switch on the battery ) but is only blinking. My computer also does not get a connection to the unity anymore.

Do you guys have any idea ?

I maybe rode around 60miles with the board so far and never had issues.

Thanks for your help guys.

Components 12s4p battery (30q),2x flipsky 6355 Motors…