We guarantee free upgrades for all users during 6-month period after registration or up to the next version if no version is released in 6-month period. Usually we also offer discounts for users of older WIDI versions.

There is an automated upgrade system that will tell you about existing upgrade discounts as well as remind you your previously purchased codes:

https://upgrade.widisoft.com

If automated system cannot find your previous purchase, contact our support service at support@widisoft.com, providing your old registration code or order number.

Current upgrade policy is at http://widisoft.com/english/upgrade.html.