To perform upgrade on the pre-installed scripts such as PHPNuke, AdvancedGuestBook, InvisionBoard or OSCommerce, please follow the following steps:
1. Login to CPanel.
2. Click on the icon Scripts Library.
3. Click on the pre-installed script that you have installed via CPanel.
4. You will notice a section named "Upgrade an existing Installation".
5. You will notice your current version and the available latest version side by side.
6. Click on "Upgrade to (latest version)" button to perform the upgrade.
