Windows 7 will find the drivers and install them for a proper workability. Under ideal conditions, your Windows 7 will install the default drivers for the peripheral Bluetooth device. If you want the official or specific drivers, you can download the drivers from the official sources and install them.
This Broadcom Bluetooth chipset is often not correctly install, or not installed at all mainly due to appearing in the device manager in Windows as nothing but the chipset name: BCM20702A0.
The Broadcom BCM20702A0 chipset is used on a vast amount of laptops, USB Dongle adapters and much more. Hopefully the correct device driver below will fix your issues, and as always backup your system and files before attempting to install any new drivers.
Another thing that will deactivate/ uninstall this driver is Windows update especially in Windows 10 and late releases. Reinstalling the driver will fix the issue.
Below are drivers for Thinkpad and HP Laptops also a generic driver that might cover all of them.
Bluetooth Device Driver Windows 10
If the device is showing a code 10 error follow the Code 10 Error guide.
More trouble shooting information is also available on this page: Fix bcm20702a0 driver error
More trouble shooting information is also available on this page: Fix bcm20702a0 driver error
Also this chipset does have issues working on Hackinosh setups, there is a Kext support that we will add below.
Lenovo device ids:
USBVID_0A5C&PID_21E6&REV_0112
USBVID_0A5C&PID_21E6
Extract the zip file to your desktop or a location that you can delete after the install. After the files are extracted run the setup.exe as an administrator.
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This topic is for programmers. If you are a customer experiencing Bluetooth device installation issues see Pair a Bluetooth device in Windows
There are two installation types for Bluetooth profile drivers:
Client-side installation for remote devices where the remote device advertises its services and the computer connects to it. Examples include: mouse devices, keyboards, and printers.
Server-side installation where the computer advertises services and remote devices can connect to the computer to use those services. For example, a vendor could author a server-side installation to enable a PDA to print to a printer attached to the computer.
These two installation types require different installation procedures.
Installing a Client-side Profile Driver
A user that wants to use a Bluetooth-enabled device will bring the device within range of the computer and initiate a connection from the computer to the remote device using the following installation sequence for a client-side profile driver.
Launch Bluetooth Devices in Control Panel to find all devices within range of the computer.
Select the device to pair with.
Pair (or bond) the device with the local radio. This may or may not involve a PIN exchange.
The local radio issues an SDP inquiry to identify the services supported on the remote device.
The Found New Hardware Wizard searches for appropriate drivers on the local hard disk drive, and/or on Windows Update.
If the Found New Hardware Wizard does not find an appropriate driver for the device, it prompts the user to insert the profile driver installation media that contains the profile driver's device setup information file (INF file).
Installing a Server-side Profile Driver
The Bluetooth driver stack supports service GUIDs as defined by the Bluetooth SIG, as well as custom GUIDs (that is, GUIDs that are not defined by the Bluetooth SIG).
Note
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The Guidgen.exe tool provided with the Microsoft Windows SDK can be used to create custom GUIDs.
A user-mode installation application must be written to expose computer functionality that remote Bluetooth devices can use.
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The installation application must communicate with the Bluetooth driver stack to create a service GUID for the functionality to expose. Vendors specify the service GUID in the application and in their device installation INF file.
The installation application must call the user-mode API BluetoothSetLocalServiceInfo. Before the application can call this API the application must have the SE_LOAD_DRIVER_NAME security privilege. The following code example demonstrates how to obtain this privilege. Note that the example does not demonstrate error handling.
Profile Driver INF file
A profile driver's INF file contains information about a Bluetooth device for client-side installation. For a server-side installation, the INF file specifies a device ID that corresponds to the service GUID created by the installation application. All Bluetooth devices are members of the Bluetooth class. The Bluetooth class installer (Bthci.dll) assists in installing profile drivers.
For more information about creating and distributing INF files and installing drivers, see Creating an INF File and INF File Sections and Directives.
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Plug and Play IDs
The Bluetooth driver stack generates hardware IDs according to the following templates:
BTHENUM{ ServiceGUID}_VID& nnnnnnnn
BTHENUM{ ServiceGUID}_VID& nnnnnnnn_PID& nnnn
BTHENUM{ ServiceGUID}_LOCALMFG& nnnn
Bluetooth Device Driver Windows 7 64 Bit
The Bluetooth driver stack generates compatible IDs according to the following template:
- BTHENUM{ ServiceGUID}
ServiceGUID is a 16-bit GUID expanded into a 128-bit GUID, as defined by the Bluetooth specification. For example, {00001124-0000-1000-8000-00805F9B34FB} corresponds to an HID device.
The 8 digits following VID& correspond to the vendor ID code.
The 4 digits following PID& correspond to the product ID code.
The 4 digits following LOCALMFG& correspond to the manufacturer of the local Bluetooth radio.
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The VID/PID and LOCALMFG tags are independent of each other.
The most generic device ID is a ServiceGUID by itself. For example:
BTHENUM{00001124-0000-1000-8000-00805F9B34FB}
The Bluetooth driver stack can be restricted to load your profile driver and software to run only on a specific release of a remote device by using Plug and Play IDs in both the remote device and the INF file. Note that the Bluetooth driver stack generates a VID/PID pair only if the device publishes a Plug and Play ID that the stack can detect using SDP. For example:
BTHENUM{00001124-0000-1000-8000-00805F9B34FB}_VID& nnnnnnnn_PID& nnnn
The Bluetooth driver stack can be restricted to load profile driver and software to run only on a specific local Bluetooth radio by specifying the LOCALMFG tag in the device ID in your INF file. For example:
BTHENUM{00001124-0000-1000-8000-00805F9B34FB}_LOCALMFG& nnnn
