: If your dongle appears as a small USB drive instead of an audio device, it might be in "developer" or "update" mode. In some cases, developers use tools like isd_download.exe
When you plug a device containing this chip into a PC, it frequently appears in Device Manager Jieli Br21 Driver
Instead of searching for "Jieli" drivers, run a standard Windows Update with the device plugged in. Windows will usually pull the generic "Bluetooth Radio" or "USB Audio Class" driver automatically. : If your dongle appears as a small
Look for a device with a yellow exclamation mark (often under "Other devices" or "Bluetooth"). Right-click the device and select . Choose Search automatically for drivers . 3. Third-Party Driver Packs Jieli Br21 Driver