For chip-level programming or upgrading, use the .
Windows 7 does not have native USB Audio Class 2.0 drivers. If your BR21 device requires USB Audio 2.0, you might need a generic USB audio driver from Microsoft (installed via Windows Update). However, Windows 7 is end-of-life. For full compatibility, upgrade to Windows 10 or 11. jieli br21 driver free
Microsoft sometimes certifies Jieli drivers. For chip-level programming or upgrading, use the
Be cautious of websites offering "JieLi BR21 Driver Free Download." Since the hardware is designed to use standard Microsoft/Universal drivers For chip-level programming or upgrading
After installation, restart your PC.
Ensure the device's LED is flashing rapidly (usually blue), indicating it is in pairing mode.