Thread:Project:Support desk/help needed to upgrade wiki version - will hire someone if needed/reply (3)

Strange configuration; I know of servers where you are no superuser as well, but you surely can use the shell. Whatever. You can still upgrade without the shell: Follow the steps in Upgrade, but do them without the shell:

Download the MediaWiki tarball to your PC and extract it there. Then log in to the server via FTP and overwrite all the files of the old installation with the extracted ones from the new tarball. Uploading the files will take some time. Then go with your webbrowser to your-domain/path-to-your-wiki/mw-config/ and run the web updater.

You might see PHP errors or a blank page when you try running the updater. In that case enable error logging/error display in PHP to see, what the actual error is.