damn i think its a physical problem with the chicken head....not sure.
contacted Kemper support...
-booting with USB did not help..
-installed other OS version..nothing.
-tried factory reset/flash memory but can`t get into maintenance mode..why...?!
Ok, i found out the chicken head is "stuck" in Browser mode but with Tuner activated like midi/volume off..thats odd i was able to deactivate the Tuner via MIDI controler (volume up)...but still the chicken head is not working..so i can`t even get into maintenance mode because it`s "stuck" in browser moder after plugin in power cable..
wtf seems i have to send the unit in....any further ideas? thanks...