Force updates on apps that are already out?

Let’s say I released an app without any kind of update implementation in the code (ie: a function that downloads the newest version string from a server-side jSON and compares it to the current.)

Since then, we’ve made some adjustments, and would like all of our users to update on a grand scale. We added this update implementation to our newest code, but that does nothing for the users who are already have our game installed. Unless they, by chance, uninstall their current version and get the newest one they’ll never have that update code added into their game. How do we get them to force-update as well? Is it even possible?

Sorry if this question is confusing.

When they update on their own, they will get your new code and after that they will have your update code. But for those who never do updates, you may never get them.

Rob

When they update on their own, they will get your new code and after that they will have your update code. But for those who never do updates, you may never get them.

Rob