I will upgrade your MediaWiki extension to the latest version. In case there are additional extensions installed, i will upgrade those too.
Things that you need to do first 1) Provide SFTP/FTP details 2) Provide Database details 3) Take a backup of Database and the MediaWiki Files (If you need me to take a backup, there could be a delay due to the slowness of the SFTP/FTP)
Blog & Magazine
Upgrade MediaWiki to the latest version with the Extension upgrade