Just wanted to post this here, since I came into the same problem, the switch just went black on the very first screen of the bootloader, not after I sent a payload, but after a simple reboot. It would not turn off or back on no matter I what did. So I tried to put it back into the RC mode, and that's how it came back.
Its very weird because its a completely black screen that wont let you turn the system off/on and its not an RC mode either. The system actually charged while in this state...
Its very weird because its a completely black screen that wont let you turn the system off/on and its not an RC mode either. The system actually charged while in this state...