Before upgrading to Totara Learn, please ensure that your server meets the minimum requirements described in the Server system requirements.
You will need to be on Moodle versions 3.3.9 to upgrade to Totara Learn 12. See our policy documents, on the impact of forking from Moodle for more information.
Replace or merge the Moodle code.
If your Moodle site is not customised you can replace your Moodle code folder with the new Totara code folder and copy your old config.php file to the new folder.
Do not copy the new code on top of the existing code folder.