BLACKBERRY CURVE 8330 Back up and os update

[xXxexpertxXx]

I WAS WONDERING if i install a new os on my bb if it will reformat the entire phone if so i have a blackberry curve 8330, and i was wondering what software i use to backup ALL my contacts, pictures and bbmcontacts as well.


? thx

[xXxexpertxXx]

also what about my apps that i purchased? how do i save all those?

[MidnightDraven]

desktop manager
and
How do I backup my Third Party Applications on my BB? - BlackBerryFAQ (http://www.blackberryfaq.com/index.php/How_do_I_backup_my_Third_Party_Applications_on_my_BB%3F)