This thread has been locked.
If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.
你好，你有使用校验位吗？
无校验位
板子重新上电或者复位一下试试，检查下usb线或者换个。
复位之后可以了，十分感谢！
