Once in a while, it may become necessary to update the Blackberry OS to a newer version. I've noticed with the service providers in Belgium that they are usually some versions behind. If whenever you need to run an application that requires a more sane (recent) version of the BB OS, you get stuck because you cannot install and/or run it.
Now you may wonder what the problem is?
Indeed, one can download the latest version from the Blackberry site, but doing so may actually break your setup, as there are quite a few things to consider:
Luckily, Blackberry has a portal where you can find download links to most (if not, all) providers of Blackberry.
In this list, find your service provider, and continue to the downloads section. You will be able to download both the OS and desktop software for your computer.
The OS itself is an EXE which you need to download and run on a computer to which the Blackberry is connected (via USB).
A list of new features and compatibility matrix can be found here:
In short, there should be a lot of minor fixes and additional features available, along with an improved layout and more responsive UI. One neat thing is the ability to view and edit Word and Powerpoint files right on your device.