RIM recently posted a document at its BlackBerry Technical Solution Center detailing recommendations to help administrators install a BlackBerry Enterprise Server service pack. A single upgrade can keep the BlackBerry Enterprise Server software current, as service packs include all cumulative changes released in previous service packs as well as hotfixes.
Steps include:
1-Download the latest BlackBerry Enterprise Server service pack.
2-Confirm and back up configuration settings and Client Access Licenses (CALs).
3-Back up the BlackBerry Configuration Database.
4-Stop BlackBerry Enterprise Server services and record logon account information.
5-Install the service pack.
See here for details.
According to RIM, the procedures outlined in the documnent involve restarting certain BlackBerry Enterprise Server services, which will will delay e-mail message delivery to BlackBerry smartphones.
