: For specialized firmware or update tools (rather than standard OS drivers), you can contact the manufacturer directly at sales01@axtekic.com or check the Axtek Support Page . Troubleshooting
After installation, restart your PC. You should now see "Jieli Bluetooth Radio" or "BR21 USB Device" under Bluetooth in Device Manager. jieli br21 driver link
Download the driver ZIP file from the DriverIdentifier link. : For specialized firmware or update tools (rather
(and its sibling, the BR17) often acts as a rather than a generic Bluetooth adapter. jieli br21 driver link
: Technical documentation and firmware tools (for series like AC63/AC69, which BR21 often identifies as) are maintained on the Jieli-Tech GitHub .
