update

[Valadur]

Well, first you should make a backup of your site and your database.

Now set your site offline. Then you can upload the files included in the patch, overwrite the files that are already in your site directory, so that you have your old files and the few new ones replace a few of the older ones.

Then run the script linked in the article, and set your site back online.

That's all. Then you can check if everything works if it is supposed to do..