Note 1: When you want to update to SP1 or SP2 without the Full Media installer and use the separate MSI packages the Management Server website will not be updated with the new client links. This means that you can not download the new clients from this site, only the old one. There is a feature request for this at Appsense (ID0001729).
The procedure to install a servicepack is not included in the Upgrade guide from Appsense. Service Pack 1 contains an update for Environment Manager and the Application Virtualization Agent.