As I wrote, there is no firmware update for my model of N95 8G NAM.
But the basic thing is: It is unexpected that any OS to be just simply destroyed by a failed installation.
In windows there is a database registry for COM applications or the manifest files that come with each .net or java application, or just the ControlPanel Add/Remove database for simpler executables.
Did symbian developers ever read about transactional updates of DB? If an app installation failed, it is just simple: no record of that app should be made in the system tracking apps. Why is so hard on Symbian to have this right?
So your point is that if an applications fails to install, the solution on Symbian OS is to go and backup all your contacts and data, reset the phone, and then anyway loose some of the applications installed?
This is just a nightmare! Not an OS!