Once the driver is updated, you must configure Windows to stop compressing the audio signal. Disable the Hands-Free Telephony Service

Right-click the Windows Start menu and select .

The Jieli BR21 Bluetooth chip powers millions of budget-friendly audio devices, wireless adapters, and automotive Bluetooth receivers. While these chips offer incredible value, generic Windows or macOS drivers often limit their true audio potential. Finding and installing the right "extra quality" driver can dramatically transform your listening experience, resolve frustrating connectivity drops, and eliminate audio lag.

using generic Microsoft Bluetooth drivers on Windows 10/11. If the device is not working, it is often due to a firmware mode conflict rather than a missing specific driver. Hardware Function : The BR21 chipset usually supports Bluetooth 5.0