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Go to and see if the Bluetooth toggle appears. 2. Manual Update via Device Manager
Check the box "Attempt to remove the driver for this device" and click Uninstall. bt-bu1 driver
Update driver; ensure "Hands-Free AG" is enabled in sound settings. Go to and see if the Bluetooth toggle appears
By ensuring you have the latest driver (often Generic/Realtek chipset-based), the BT-BU1 adapter provides reliable wireless connectivity for a wide variety of audio and HID devices on modern Windows systems. To get the exact driver for your device, could you tell me: could you tell me: