Beware! If you have more than one component of System Center you need to do the upgrade in a particular order. This wasn’t detailed well when the MS docs were initially released, but has since been published.
2. Service Manager
3. Data Protection Manager (DPM)
4. Operations Manager
5. Configuration Manager
6. Virtual Machine Manager (VMM)
7. App Controller
see http://technet.microsoft.com/en-us/library/jj628203.aspx for complete details.