well it seems CSR hasn't updated the drivers for these devices in quite some time but here is a link so you can pick the one you need as well as a tutorial for making bluetooth devices work with windows 7 incase you need it.
Most Recent 50 Driver Downloads - PC Pitstop Libraries
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Make your Bluetooth devices work on Windows 7
Let Me Pick from a List of Device Drivers on my computer". Select 'Bluetooth Radio' from the list if it asked you to select and then in the next window, it will show a list of drivers with Company Names in one list and Drivers in another. In the Company List choose 'Microsoft Corporation', not only Microsoft. - From the drivers list there may be one or more drivers with the name "Windows Mobile-Based Device Support" with different driver versions. Select one or the latest. - Ignore any warnings and keep pressing next and then Finish at last. If all goes well, the last screen will show the message that device driver is successfully installed. Now, after manually updating the driver for your bluetooth device, in 'Device Manager' when you click on 'Bluetooth Radios', it should display one more item which will say 'Windows Mobile-based device support'. There are few more things that you want to pay attention to. If you have already added the device in your 'bluetooth device list' that didn't work, then remove the device and add it again. After you add it, you might need to restart the computer if it gave you a connection problem error message. Every PCs that had Windows 7 and Vista worked after installing this software and I hope it will work for you too.