Enables the device to switch from a "storage" mode to a pairing mode, indicated by a flashing blue LED.

Unlocks noise reduction and high-quality sound processing built into the Jieli chipset.

Because Jieli is a chipset manufacturer, drivers are often bundled by third-party device makers (like Borofone or various "no-name" mixer brands). You can find free downloads on these trusted driver repositories:

Provides general Bluetooth device drivers that often support Jieli-based hardware for Windows 10 and 11 (64-bit). How to Install the Driver

Fixes "sound not working" errors on Windows 10 and 11 by providing the correct hardware ID mapping. Where to Download Jieli BR21 Driver for Free

The is a essential component for users of Jieli Technology’s Bluetooth audio adapters, USB sound cards, and mixers . While these devices are often marketed as Bluetooth dongles, many systems identify them as USB Composite Devices or USB Sound Cards , which require specific drivers to enable high-fidelity audio transmission and receiving capabilities. Why You Need the Jieli BR21 Driver

Most Jieli chips are designed to bridge the gap between digital USB signals and wireless Bluetooth audio. Without the proper driver, your Windows PC might recognize the device only as a generic storage unit or fail to show the Bluetooth "pair" button altogether. Installing the driver ensures:

Offers a setup package (v4.2.8) compatible with Windows XP through Windows 10.