- Connect the board to the computer USB
- Press and hold the
BOOT
button!!! Don't let go!!!, the position of theBOOT
button is different for each board, check the pin diagram - Press the
RST
(reset button), then release theRST
button, and finally release theBOOT
button - Check whether there is a port in the computer device manager
Most people do not follow the steps to write, for beginners, please try this process at least 3 times, please make sure each step is correct
If none of the above can be successfully written into the firmware, then it can be judged that there is a problem with the board.