I've just bought a second hand Nokia Connectivity Pack for the Nokia 6210 however when I connect the Bluetooth battery to the phone the Bluetooth chip is not recognised - although the battery works fine as a battery. There is no error - the Bluetooth icon just doesn't appear. The software version on my phone 5.56 so I believe that is okay.
Have I been sold a defective bluetooth battery, or is there anything I can try to get the two working together? If the battery is defective what are the options on repair?