On a windows computer it should be under: Users\user account\AppData\Local\Plex Media Server\Updates. Don’t know about other platforms. I started manually updating after 1.5.1 so don’t have any updates in that folder after that version, but have all other versions saved in a separate folder. Probably should clean out some of them since I won’t be going back.
Depending on which version you need you might still be able to grab it from Plex server. You have to know the full version number and replace the version information in the URL for the current download. For example the current version download for Windows links to:
Removed for codec licensing restrictions.
