Jieli Br21 Driver Link Exclusive Site

If your device is not working or appears as a "Storage Device," try these steps: :

The most reliable source is the official JieLi support site (Baidu Pan), but it requires a Chinese phone number to login. jieli br21 driver link

For hobbyists and makers, once the driver is installed, your PC will assign a COM port (e.g., COM3). You can use a serial terminal (like PuTTY or Arduino IDE Serial Monitor) to send directly to the BR21. If your device is not working or appears