The installation of a new release of PDFUnit-XML runs just like the initial installation, because PDFUnit-XML is always delivered as a full release, never incrementally.
If you use PDFUnit without a license, download the new ZIP file from the internet: http://www.pdfunit.com/en/download/index.html.
If you use PDFUnit with a license, you will receive a new release and a new license file by mail.
Before you start installing the new release, run all existing unit tests with the old release. They should be “green”.
Save your project.
Unzip the new release into a new folder.
Make sure that the new version of PDFUnit-XML is compatible with the existing version of PDFUnit-Java. You may also install a new version of PDFUnit-Java as described in the next chapter.
Copy all your test files, PDF documents and individual configuration files from the old project into the new release.