Software updates can be tricky. Many standard as well as individual software products experience temporary improvements, modifications, patches and similar changes before they are integrated into a new version in a compact way. In most cases a separate update is required for technical reasons to make it possible that all features can be used in the new version. This software update can but must not be free-of-charge. The upgraded version is operational after the download of the updates. The update file(s) as such are sometimes no longer sufficient for a successful start of the applications.
When looking at used software, which can above all be found in the internet under sometimes dubious conditions, you should consider one aspect: seemingly reasonably priced used software licenses are often are exclusive and, therefore, non-usable software licences of former program versions.