Update packages are not the same as the normal Sitecore Packages most of us are accustomed to installing. This means that you cannot use the standard package installer to install these.
Instead, you must use the Update Installation Wizard, which can be found here:
If you are looking to automate the installation of a package then download the package installer source code from GIT (GitHub Project
) . The package installer will let you script your package deployments. We gave you the source because we realize that each of our customers will have slightly different requirements and the ability to customize the source allows for maximum flexibility.