When you use a USB uploader to upload the firmware for NyBoard, please download and install the driver first:
Windows: https://www.wch-ic.com/downloads/CH341SER_ZIP.html
Mac: https://www.wch-ic.com/downloads/CH341SER_MAC_ZIP.html
Linux: https://www.wch-ic.com/downloads/CH341SER_LINUX_ZIP.html
For example, for Windows:
Last updated 2 months ago