If you have found yourself in a scenario where you cannot update Joomla! via the Joomla! Update Component and need to perform a manual update for any reason whatsoever, this script will assist with performing all necessary steps that would be taken after the update component runs the updates on the filesystem.
This script assumes that you have manually extracted the update package over your site and are ready to finish the update. You should trigger this script immediately after this process and before logging into your site's admin to do anything else, including the "database fix" routine.