But in the guide I read that with the last version of qt would be possible to compile for symbian 5th edition, too!
Are there files to add to the installated qt to include this possibility?

I'm sure it is very easy but I've looked for it for 2 hours and I've not found it:
How can I add symbian 5th edition to devices for which I want to compile my application in qt 4.7.4!

I created a...