nRF54L15-DK USB connection not working anymore

Hey, 

the USB connection to my nRF54L15-DK isn't working anymore. 

It is not showing up in nRF Connect Desktop and I can't find it under /dev/tty... or /dev/cu...

The VBUS voltage is 5V, e.g. on P3. 

I swapped cables, changed USB ports, powered things off and on... without any luck.

Is there anything else I can try?

Is there a recovery mode for the SEGGER J-Link OB Programmer/debugger (nRF5340)?

Thanks in advance. 

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