In order to update module to the newest version, please follow this steps:
1. Deactivate current version of a module.
2. Download (buy) the .zip file from your ORBITVU SUN account ("My products -> Integrations -> Self Hosted plugin").
3. Unpack the .zip file
3. Copy unpacked content into your Prestashop's module path "presta_path/modules".
4. Login to your Prestashops's back office and go to the Modules. Search for the "Orbitvu SUN" plugin and activate it (all update tasks will be automatically performed in the background during activation).