About backing up and restoring device data
If you have installed the BlackBerry® Desktop Software on your computer, you can back up and restore most of your BlackBerry® device data, including messages, organizer data, fonts, saved searches, and browser bookmarks using the backup and restore tool of the BlackBerry® Desktop Manager. For more information, see the BlackBerry Desktop Software Online Help.
If your device is associated with an email account that uses a BlackBerry® Enterprise Server, you might be able to restore synchronized organizer data to your device 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.