: If using the AXTEK Update Tool , ensure the DIP switches are set correctly for the BR21 (usually the lower four bits remained unswitched for standard USBkey sending). christian-kramer/JieLi-AC690X-Familiarization - GitHub
To recap:
If your BR21 device isn’t connecting “driver free”: jieli br21 driver free
The USB Implementers Forum (USB-IF) has standardized USB Audio Device Class (UAC) 3.0, which further simplifies plug-and-play. Future chips will require even less user intervention. : If using the AXTEK Update Tool ,
Have a specific issue with your Jieli BR21 device? Leave a comment below (or consult your device’s manual for pairing mode instructions). Remember: no driver needed. Have a specific issue with your Jieli BR21 device
The Jieli BR21 is a plug-and-play, driver-free chip for standard audio. If you’re being asked to install a driver, you’re likely dealing with a vendor’s optional “audio enhancement” tool, not a requirement for basic functionality.