Open System Journal  updating procedure, example from from 3.2.1.1 to 3.3.0.8

The most important is backuping up your old code and datase before doing anything just in case if need to downupgrading (going back).

1- Replace the old code of the OJS with new code – keep the old config.inc.php (for the parameters)
2- Change on “installed” from “On” to “Off” on config.inc.php
3- Browse to your journal, for ukgoodbye.co.uk/ojs and the OJS should show the installation page

4- OJS update procedure
To update your current OSJ you should see, “if you are upgrading an existing installation of OJS, click here to proced.”

This procedure was used to update the OJS version 3.2.1.1 to OJS 3.3.0.8