NX4827T043 11 touch issues

Greetings, I have a NX4827T043 11 - Initially I connected it to a suitable power source and the demo worked fine, I did the test with a two-button design, the screen shows the buttons, but —I can’t make the touch respond- --I did this (touch j) but since the touch doesn’t work I can’t calibrate…the touch doesn’t work, I want to know if you can help me or give me a firmware, talk to the Chinese, but it’s rubbish, thanks