This upgrade package is only for users who had purchased 'Shipping Methods Restricted by Products' and still has an access to the latest versions of that extension. If you do not have the access to latest versions of 'Shipping Methods Restricted by Products', do not buy this item, it will not work for you. Instead, you should buy a full version of 'Shipping Methods Restricted by Products for Opencart 2' at this URL:

http://www.opencart.com/index.php?route=extension/extension/info&extension_id=27425

The 'Shipping Methods Restricted by Products' extension for Opencart 1.5.x versions is available here:

http://www.opencart.com/index.php?route=extension/extension/info&extension_id=17904

If you have any questions or notes regarding the upgrade procedure please post them in comments, I will reply to them directly at your email.