Before you can use ZENworks 11 SP2 to upgrade OES11 servers to OES11 SP1, you must have the following:
A ZENworks 11 SP2 server installed and running in your network.
For more information, see the ZENworks 11 SP3 Server Installation Guide
The ZENworks 11 SP2 Agent installed on each OES11 server that you plan to upgrade.
Each OES11 server registered with the ZENworks 11 SP2 server.
Each OES11 server updated with the latest OES11 and SUSE Linux Enterprise Server (SLES) 11 SP1 patches. It does not matter which update method you use.