You can apply maintenance packages to an existing product installation by installing a customized installation package (CIP). The process of applying maintenance to an existing installation with a CIP is commonly referred to as a slip installation.
Create a build definition file to specify what options to include in the CIP. See Creating a build definition file and generating a CIP for more information.
When applying maintenance with a CIP that contains a refresh pack, a fix pack, or both, all previously installed authorized program analysis reports (APAR) are uninstalled by the wizard. If the CIP is at the same level as the product, previously installed APARs remain only if they are packaged in the CIP. To successfully apply maintenance to an existing installation, you must include the installed features in the CIP.
The product binary files are copied to the was_home/properties/version/nif/backup directory. You can use the IBM Update Installer to uninstall the update and restore your workstation. See Uninstalling CIP updates from an existing product installation for more information.