If you go onto the Rockwell Knowledgebase, and search for Studio5000 download, there are a couple of articles on this :
635512 - Studio 5000 Software: Download Older Versions of Software, which shows you how to download versions from the current one to the earliest..
609227 - Downloading older revisions of Rockwell Software
- If the software serial number is currently covered under support contract you may download all versions of this software up to the latest one available
- If the software serial number is not covered under the support contract (serial number is out of support) it is possible to download only older versions of Rockwell Software up to the version that was purchased (or updated when serial number was in support)
so if you do not have the support, then you cannot download any newer versions, otherwise all older versions are available.