I see your point, thank you...

I just don't understand the logic of a big company like Nokia leaving its customer on its own after collecting £400...if it is economically unsustainable to maintain so many different versions of software, why creating them in the first place?...

or why during last update they did not convert my version (or any other versions they consider unworthy of their effort and attention to a "better" version which they would be happy to support over time?