Thread:Project:Support desk/Be Our Hero! Please?/reply (3)

Yes it should still be possible - However what you need is the database files, not the mediawiki files.

If you have the db set up with all the old wiki data, when you're installing the new version of MediaWiki, keep the old LocalSettings.php file from the previous wiki (assuming the information in it about the db is still accurate) and when you run the installer, the mediawiki installer should detect the old version and upgrade it.

Otherwise you could try replacing the db of an already installed new version of MediaWiki with the old DB, and then run update.php which will upgrade the db to be compatible with the new version of MediaWiki.