If v4.1 proves too buggy for your specific model (especially very old DCT4 phones like the 3310), consider (v. 2012.04.008). It is lighter and more stable for older USB interfaces. However, for BB5 and Symbian^3, v4.1 remains superior .
Are you trying to , or are you looking for a working download link for the suite itself? download nokia firmware suite v4.1
For technical documentation or professional network management tools, you can visit the Nokia Documentation Center . If you'd like, let me know: for BB5 and Symbian^3
[Link to your download file]