Updating the BCM2035B USB Bluetooth driver is similar to installing it:
If you own an older Bluetooth dongle featuring this chipset, or if you’ve stumbled upon one in a drawer, you may have noticed that modern versions of Windows no longer automatically recognize or properly support the device. The device shows up in Device Manager with a yellow exclamation mark, or Windows simply labels it as an "Unknown USB Device." bcm2035b usb bluetooth driver
: If the installer doesn't run, try right-clicking the file and selecting "Run as Administrator" or using Compatibility Mode for Windows 7. 3. The Automatic Route Updating the BCM2035B USB Bluetooth driver is similar