If you have an earlier version of Alt Controller installed, you can upgrade to the latest version by simply downloading and running the latest installer. There is no need to uninstall the old version. In this way, your program options will be preserved and you can start using the new version immediately.
Your existing profiles (sets of controls) will work in the new version of the software. It’s a good idea to double-check that profiles work as expected in the new version of the software before you save them. After profiles have been saved using a newer version of the software, they may no longer work in an older version of the software.