Driver — Bt-bu1

If your device is generic, download the from a reputable repository like Station-Drivers or Intel’s Driver & Support Assistant (Intel now owns Broadcom’s wireless division).

If you’re running macOS on non-Apple hardware, the Broadcom BCM20702 is natively supported. Use kexts to load the firmware. The bt-bu1 identifier will not appear; instead, the system will show "Apple Broadcom Built-in Bluetooth." bt-bu1 driver

The bt-bu1 driver has been a recurring topic in our support forums, especially among developers working with legacy Bluetooth 2.0/4.0 USB bridges and custom industrial adapters. Unlike standard CSR or Broadcom chips, the BT-BU1 presents unique challenges in initialization, firmware loading, and power management. If your device is generic, download the from

for anything mentioning "Bluetooth," "Realtek," or "CSR." Check the box and click Download and install Microsoft Support Method 2: Manual Update via Device Manager Device Manager , right-click the Unknown Device Bluetooth Adapter Update driver Search automatically for drivers If that fails, select Browse my computer for drivers Let me pick from a list of available drivers on my computer from the list, then look for Generic Bluetooth Adapter or a similar manufacturer name (like Microsoft Support Method 3: Identifying the Chipset The bt-bu1 identifier will not appear; instead, the