@ps-oz I'm having the same problem here except when I plug in to my MacBook Pro via USB-C the device and port are no longer listed in UIFlow or M5Burner.
Posts made by nerdmeeting
RE: My M5 Stack Fire is Dead or Bricked somehow
RE: My M5Stack Core2 ESP32 IoT Development Kit for AWS out of order after the first power off
I am having the exact same problem. In addition to the black screen, I also hear a constant clicking. Now, my computer won't recognize device and the USB port. Still looking for a solution so i don't have to return it, for the 2nd time.