Hello Balazs!
Please tell me what can happens with controller?
On every UCCNC start the program initiate firmware update.
Update done, but then UCCNC lost connection to the controller.
We try to use 1.2047 version and 1.2102 version no sense.
This is a short video about issue https://yadi.sk/i/YDPUWA9p3SPri7
Thank you!