Jieli Br21 Driver Link Official

Once you have the JL_CDC_Driver folder or installer, follow these steps:

Some Jieli chips can accidentally enter a "Mass Storage" mode for firmware updates. If this happens, the computer sees it as a drive instead of an audio device. jieli br21 driver link

In Device Manager, right-click your device and select . Once you have the JL_CDC_Driver folder or installer,

: Press Win + X and select Device Manager . Look for "Other Devices" or "Unknown Device" with a yellow exclamation mark. : Press Win + X and select Device Manager

have discovered that by "jumping" specific pins on the chip, they can force it into BR21 UBOOT mode

Once the device is recognized, look for a flashing blue LED. This indicates it is in pairing mode . It may take a minute for the OS to finalize the setup before this starts.