Thread:Project:Support desk/Webhosted Installation; Upgrade to 1.18

My Wiki 1.17 is running on a webhosted server. My attempt to upgrade to 1.18 failed. When calling .../mw-congfig/index.php I received a blank screen as an answer. Also the main page didn't response. I was lucky that I had a backup, so everything was recovered.

My question: What do I have to do to make an upgrade? Should I just copy the downloaded 1.18-files fia FTP to my wiki? Any idea or a best practice hint?

THNX