DUDU-Meng
Well, it actually made it worse. The update was successfull:
But after removing the device, the screen goes black. Waited for few minutes - screen is still black. When I click "reset" the image of a loaded os appears for a second and then disappears. The boot screen image also is not appearing (screen remains black). However, when I cycle 12v with reset button eventually the screen comes up with a boot logo and back to the same error cycle with "Wait mcu reboot failed" error, and after 2-3 minutes boots into OS with same things not working (sound, BT)
Here's ver info screenshot after "flashing" mcu:
