Generic chipsets are notorious for minor software glitches. Here is how to fix the most common problems: 1. The Device Keeps Disconnecting / Yellow Triangle Error
To help narrow down the exact file you need, could you check and tell me the Hardware IDs for the Jieli device? If you are facing a specific error code like Code 10 or Code 43 , let me know so I can provide the exact fix. Share public link
If you are trying to program or modify the chip (e.g., changing the pairing name), you won't find a "consumer" driver on a standard website.
It often identifies itself as "Jieli BR21" or "Jieli BR17," which makes finding specific firmware or advanced control tools difficult. Limited Customization:
Use usb_modeswitch to try to force the device into audio mode. Problem 2: Bluetooth Appears, but No Audio Jieli Br21 Driver
If your computer is asking for a , you likely have one of the following plugged in or turned on near your PC:
If you are still experiencing issues with your hardware, let me know:
A: Try the following: use a USB extension cable to move the dongle away from the PC case, ensure the dongle and your audio source are within a clear line of sight (ideally within 10 meters), and check for other 2.4GHz interference sources.
A: Those files are not real. They are a proprietary mechanism used by the device to communicate and are a harmless side effect of its design. Do not attempt to play or delete them. Generic chipsets are notorious for minor software glitches
: When the chip's data pins are pulled to specific states or the firmware fails to execute, the device registers via USB hardware strings as a BR21 UBOOT1.00 device . This state exposes the internal flash storage over standard mass storage protocols for flashing custom firmware binary packages.
Because Jieli is a component manufacturer (B2B) rather than a consumer brand, Instead, you must rely on standard Windows architecture or trusted generic driver packages.
Zhuhai Jieli Technology designs highly integrated System-on-Chips (SoCs) that combine a CPU, a Bluetooth radio, RAM, and a USB controller onto a single piece of silicon. The BR21 system operates on distinct functional logic compared to premium wireless adapters like Intel or Broadcom:
Typically Bluetooth 5.0 / 5.1 (depending on exact chip iteration) Wireless Audio Streaming and Basic Data Transfer Conclusion and Safety Warnings If you are facing a specific error code
If you have purchased a pair of budget wireless earbuds or a Bluetooth speaker online, you might have stumbled upon the name "Jieli" in your device manager. Specifically, the is a popular System-on-Chip (SoC) used in countless affordable audio devices.
Right-click the problematic BR21 device and click . Click Browse my computer for drivers .
: Unbranded or budget USB Bluetooth adapters (often advertised as Bluetooth 5.0 or 5.3).
Windows 10 and 11 typically recognize it as a generic "Audio Device" or "Borofone BR21 Stereo" without needing extra software.
The devices should pair without a software interface on your PC. christian-kramer/JieLi-AC690X-Familiarization - GitHub