In order to update module to the newest version, please follow this steps:
1. Download the .zip file from your ORBITVU SUN account
2. Unpack the .zip file
3. Copy unpacked content into your Magento's root path
4. Open server bash shell and go to the Magento's root path. Run the command:
php bin/magento setup:upgrade
This command checks all of the modules and launches schema updating process.
After updating the plugin you may need to clear the Magento's cache.