I will note, for the time being, the freeware version 2.5.8 continues to run on my updated Win10 laptop. Of course, I'm living on borrowed time. I used the laptop infrequently, and I have to schedule my use of it, because every time I turn it on, it wants to download the latest updates, and that can take a while sometimes. With that activity, I'm running the risk that one time Windows will update, and TuneECU won't work, and at that point, the freeware version will be dead to me. It would be possible to have a dedicated computer that is not used for anything else, and is never updated. That's how some people continue to use some dinosaur old games and such.