You can apply maintenance packages to an existing product installation by installing a customized installation package (CIP).
Create a build definition file to specify what options to include in the CIP.
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 or updates to an installation, the CIP must include the installed features. To successfully apply maintenance to an existing installation, which is referred to as a slip installation, you must include the installed features in the CIP.
The installation preview summary lists the resulting product version and any applicable features and interim fixes. Next, the wizard successfully applies the maintenance and updates the features of the product.
The product binary files are copied to the was_home/properties/version/nif/backup directory. You can use the Update Installer to uninstall any updates and restore your workstation.