Thank you! As it turned out, the main problem was that if in a program on UIFlow 2.0 (block mode) you create a variable named "state" and assign it 0 during initialization, then the controller starts to behave inappropriately (hangs, new programs either do not load or load but do not work , there are problems described in the previous post). It only helps to re-flash the controller using M5Burner and load into it a program in which there are no omissions of a variable called "state".

I burn my Atom S3 Lite in m5 burner with official firmware (Alpha-15 version). The burn process completed successfully, and bind device to my account. After that I open Uiflow 2.0, enter to my account, press ''select device" and select my public device. But the selected device is displayed in red and when I click "Run" or "Download" it writes an error "Execute code failed!". What am I doing wrong?