If you have installed the BlackBerry Desktop Software on your computer, you can back up and restore most of your BlackBerry smartphone data, including messages, organizer data, fonts, saved searches, and browser bookmarks using the BlackBerry Desktop Software. For more information, see the Help in the BlackBerry Desktop Software.
If you haven't saved anything on your media card, you can back up and restore most of your smartphone data using your media card.
If your email account uses a BlackBerry Enterprise Server, you might be able to restore synchronized organizer data to your smartphone over the wireless network. To restore synchronized organizer data over the wireless network, you must have an activation password. For more information, contact your administrator.
Research In Motion recommends that you regularly create and save a backup file on your computer, especially before you update any software. Maintaining a current backup file on your computer might allow you to recover smartphone data if your smartphone is lost, stolen, or corrupted by an unforeseen issue.