Thread:Project:Support desk/Order of MW upgrade (1.22 to 1.24) + extensions/reply

Manual:Upgrading should explain it, but anyway, the usual option is to unpack new files on an empty folder instead of the existing installation, download current versions of extensions, and then copy the LocalSettings and other modifications (images), making that folder the published directory on the webserver (or switching between old and new folders).

Your steps seem to go in the right direction. What errors do you get?