Let the unlicensed USB Bluetooth adapter automatically install the driver method
by fisio on 2007-08-22 21:40:26
1. Open the device manager (Win key + Pause/Break key → Hardware → Device Manager) and find the Bluetooth device with abnormal driver, such as my BCM2045A. Open its properties → details, for example "USB\vid_0a5c& PID_2100 ", which records the vid and PID of the device. The value is a four-digit hexadecimal number.
2. Start → Run (Win + R) : notepad %systemroot%\inf\bth.inf, find [Sony.NT.5.1], add a line under it, vid and PID fill in the values you just saw:
USB Bluetooth Device= BthUsb, USB\Vid_0a5c& Pid_2100
3. Return to the device Manager, click Update the driver of the device, select automatic installation, you can complete.