How to Clear the Universal Installer Package Cache
The Universal Installer caches installation files. When an update is installed, only those files that have changed are downloaded. You can clear the package cache to force the installer to redownload the installation files from the server the next time you install or update a product.
To clear the Universal Installer package cache, click the Version number located in the bottom right-hand corner of the Universal Installer. Then select Clear installer package cache....
Clearing the package cache does not affect existing installations. It simply deletes cached installer files. These files will be automatically downloaded the next time you install or update a product.