Board Thread:Support Requests - Getting Technical/@comment-44559586-20200517141315/@comment-9605025-20200517143344

Then you aren't looking at the right thing. File pages have the edit button next to the page title just like most pages. The dropdown there has a history option. On a file page, this option shows you the description's history as you described.

If you go back to the file page and look below this description, there should be additional sections that have been autogenerated. On legacy wikis, they are displayed as tabs and on UCP wikis they are regular page sections. One of these should be labeled "File History". That is what Mendes2 is talking about. In that section, there should be a table showing each of the previous image versions. If there are version that don't show, it is probably because the page was deleted at some point. Those versions can be restored by restoring the file page's deleted revisions.