Even though the device is simple, users frequently encounter issues. Here are the fixes.
To save yourself future headaches:
: Sites like DriverIdentifier host community-uploaded drivers for the Borofone BR21 and other Jieli-based hardware. jieli br21 driver link
Windows Update may overwrite the Jieli driver.
Windows 10 and 11 often carry generic drivers for these chips. Search for "Jieli Bluetooth" or "BR21" in the Microsoft Update Catalog. Even though the device is simple, users frequently
For developers, the Jieli documentation portal ( doc.zh-jieli.com ) is the primary official resource.
Note: Baud rate is typically 115200 or 9600. Windows Update may overwrite the Jieli driver
The most reliable source is the official JieLi support site (Baidu Pan), but it requires a Chinese phone number to login.
Before downloading a driver, it is important to understand what the BR21 actually is. Unlike standard Bluetooth dongles that add a Bluetooth radio to your PC, many Jieli-based devices act as or USB Sound Cards .
Since JieLi chips rely on standard Bluetooth protocols, forcing a generic driver usually fixes the problem. In , right-click your JieLi device. Click Update driver > Browse my computer for drivers .
: Right-click the device > Properties > Details > Hardware Ids . Common Jieli IDs include VID_E5B7&PID_0811 or VID_4C4A&PID_4155 . Manual Update :