hi, thank you for your advice. updated the firmware several times, with different presets and 1.0 and 1.1, as there is no sound from the device, no technical support. the device boots normally and shows firmware 1.1.2.390. MIDI control center shows all actions with the device. can't figure it out is it a firmware bug or a hardware problem? will have to go to the store in Tallinn, where I dug the device, and I'm from Ukraine and for me it's a problem.