A company offers a downloadable product on their website. The product has been in development for years and there have been many versions released. The company has a set of terms and conditions that apply to the software.
If at some point the company decides to change the terms of conditions, do the updated terms and conditions apply to all versions of the software, or versions released after the change? If the user does not download the new version of the software, can they perform actions that may not be legal under the new terms and conditions, but are legal under the ones that were in effect when they downloaded the software?