Thread:Project:Support desk/Problems upgrading from an older version of Mediawiki/reply

Hi!

Basically you can upgrade MediaWiki in one step: From your version directly to the new version, which you want.

Since you still have PHP 5.2, I would in your case make one step inbetween: MediaWiki 1.19 is the last version, which is compatible with PHP 5.2. So I would try to do an update to MediaWiki 1.19. (Then you probably have to make some changes in your skin and update some extensions to make things work with 1.19.)

After that update PHP to 5.3; MW 1.19 is compatible with PHP 5.3.

Then update MW to version 1.20 (just like you updated to 1.19 before).