Does it work with Xsonic Airstep?
When I plug my Airstep (using USB C to USB A cable) and power up the Player, it stops booting process with 14 white LEDs on and the last one blinking.
Is my Player defective?
to me it looks like the Airstep is creating a MIDI loop via USB then... or maybe something goes wrong with the USB enumeration.
On another thread a user reports that an Airstep lite firmware was needed to get it going :
So it seems to me the Airstep has firmware issues.
Unfortunately it's not feasible for us to debug all possible external non-Kemper gear problems.
It would help if we would get a so called 'USB descriptor dump' from your Airstep.