Well, I still use a Nokia 6310i as a backup (one of the best phones ever made!) and it requires an old version of the Nokia software. And I also have a 6120 classic, which requires the more recent version. There's no version that will work for both and even worse, you can't have both installed at the same time. IF you try, you break both of them and "repair" install doesn't help. Very very frustrating.

And no, I Am not the only one with a 6310i - there are many articles on the web how many people still use them for one reason or another (some Mercedes integrated phone/comm systems require that phone, for example)

http://www.unwiredview.com/2008/03/0...or-nokia-6310/