Jieli Br21 Driver Link Site

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 AT commands directly to the BR21.

Note: Baud rate is typically 115200 or 9600.

On Linux, the BR21 download mode appears as a generic USB device – no special driver needed if using open-source tools like libusb with Python flashers (e.g., jieli-pc community project). For macOS, a signed driver is rare; virtualized Windows is often easier.

Right-click the JL_BR21_Driver.zip and select "Extract All." You should see files like JL_USB.inf, JL_USB.sys, and setup.exe.

Jieli BR21 (often appearing as part of the BR17/BR21 series) is typically not a standard Bluetooth dongle requiring a dedicated Bluetooth driver; rather, it functions as a USB Composite Device USB Sound Card that uses generic system drivers. Ask Ubuntu Understanding the Driver Situation Plug-and-Play Nature

: Most devices using this chip are designed to be recognized automatically by Windows, macOS, or Linux as a USB Audio Device Common Recognition Issue

: Users often report these devices showing up as "Storage Devices" or generic audio units because they are designed to transmit/receive audio streams via the built-in USB-audio driver rather than acting as a full Bluetooth stack for the PC. Update Tools : For developers or those needing to flash the chip, the Jieli USB Dongle 4.0 Update Tool is the official way to interface with BR21 series hardware. Ask Ubuntu Troubleshooting & Resources

If your device isn't working, it is likely a configuration issue rather than a missing driver: System Recognition : Check your sound settings for a device named JieLi BR17

. It may appear in your system's sound settings rather than the Bluetooth menu. Manual Tools

: Technical documentation and update tools can be found on support sites like the Axtek Support Page OS Specifics jieli br21 driver link

: Sometimes requires installing standard Realtek or generic USB audio drivers if the automatic install fails. Linux/Ubuntu : You can use commands like to verify it's seen as ID 4c4a:4155 Jieli Technology USB Composite Device Microsoft Learn

For developers looking for SDKs or programming resources, the official Jieli Technology GitHub

hosts various libraries for Bluetooth and health-related chip integration. Jieli BR21 Bluetooth dongle shown as storage device 4 Feb 2021 —

Jieli BR21 is a common Bluetooth chipset often found in budget USB dongles, microphones, and sound cards. It is frequently misidentified by operating systems as a storage device or a generic USB sound card rather than a Bluetooth adapter. Ask Ubuntu Driver Identification and Download

Because Jieli (Zhuhai Jieli Technology) primarily manufactures the internal chips rather than the final consumer products, they do not provide a direct "BR21 driver" download on their official website

. Instead, you must use generic drivers or drivers provided by the specific device brand (e.g., Borofone). 杰理科技 Windows 10/11 : Most Jieli BR21 devices use the Microsoft Generic Bluetooth Driver . If your device is not recognized, you can try the Borofone BR21 Stereo Driver available on DriverIdentifier which is known to be compatible with this chipset. : The device often shows up as ID 4c4a:4155 Jieli Technology USB Composite Device . If it is stuck in storage mode, you may need to use usb-modeswitch to force it into Bluetooth mode: sudo apt update && sudo apt install usb-modeswitch -y sudo usb_modeswitch -v 0xe5b7 -p 0x0811 -W Ask Ubuntu Troubleshooting Common Issues Appears as "Audio Device" Only

: This is common for the BR21 and its predecessor, the BR17. In many cases, these devices are designed only to

audio (like a wireless headset) and do not support full Bluetooth dongle features like file transfer or connecting other peripherals. No "Bluetooth" Toggle

: If the Bluetooth button does not appear in Windows Settings, the system hasn't loaded the radio driver. Right-click the device in Device Manager Update Driver For hobbyists and makers, once the driver is

, and choose "Browse my computer for drivers" to manually select a "Generic Bluetooth Adapter". Ask Ubuntu Are you trying to connect a specific device like headphones microphone using this adapter? Jieli BR21 Bluetooth dongle shown as storage device

I can confirm this works with Ubuntu 22.04. Using at terminal lsusb lists as: "ID 4c4a:4155 Jieli Technology USB Composite Device" Ask Ubuntu Jieli BR21 Bluetooth dongle shown as storage device

Troubleshooting Your JieLi BR21 Bluetooth Connection If you've just plugged in a JieLi BR21

device and found it's not working as expected, you’re not alone. Many users find that Windows or Linux identifies these devices as a "USB Composite Device" or even a storage drive rather than a standard Bluetooth dongle.

Here is everything you need to know about the "drivers" and how to get your device running. 1. Understanding the JieLi BR21 The most important thing to know is that the JieLi BR21

(and its sibling, the BR17) often acts as a USB Sound Card rather than a generic Bluetooth adapter.

The "Hidden" Bluetooth: Instead of adding Bluetooth to your PC, the chip inside typically receives audio streams from a phone or PC and plays them back.

Driver Status: Because it often presents itself as a standard USB audio class device, it usually uses plug-and-play generic drivers provided by Windows or Linux. 2. Why Can't I Find a "Driver Link"? There is no single official " JieLi BR21

Driver" installer from the manufacturer because the chip is sold to many different third-party brands like Borofone. If your PC doesn't recognize it automatically: Note: Baud rate is typically 115200 or 9600

Check Device Manager: Look for a "USB Composite Device" or an "Audio Device" with a name like Jieli Technology.

Auto-Update: You can try right-clicking the device in Device Manager and selecting Update driver > Search automatically for drivers to let Windows find the best generic match.

Avoid Third-Party "Scanners": You may see sites like DriverIdentifier listing specific files for " Borofone BR21 JieLi BR17

," but these are usually just repositories of generic Windows system drivers. 3. Quick Fixes for Common Problems

The Blue LED Flash: Once the device is recognized, look for a flashing blue LED. This indicates it is in pairing mode. It may take a minute for the OS to finalize the setup before this starts.

No Bluetooth Icon? If you are looking for the Windows Bluetooth settings menu but it isn't appearing, your device is likely being treated as a sound card. Check your Sound Settings (Playback devices) to see if "JieLi Audio" or similar is listed there.

Firmware Tools: For advanced users or developers, technical manuals for Jieli USB Update Tools exist, but these are for flashing the chip's firmware, not standard consumer use. Are you trying to use the

to add Bluetooth to your PC for a mouse/keyboard, or just for audio? Providing this detail can help me find a specific workaround for you. Jieli BR21 Bluetooth dongle shown as storage device

I can confirm this works with Ubuntu 22.04. Using at terminal lsusb lists as: "ID 4c4a:4155 Jieli Technology USB Composite Device" Ask Ubuntu Jieli BR21 Bluetooth dongle shown as storage device