I think I've made a big mistake in automatically upgrading my apps and the iOS for my 1G (iOS 3.1.3) because I now have apps that no longer work on that generation; they just start up and then shut down. The developer says it's because the upgraded apps no longer work with the 1G devices at 3.1.3--if I'd known that, I'd not have upgraded the app/iOS because I'd rather have an "old" app with fewer features than a non-working app. Considering that I'm now stuck (am I? I did go back and save the earlier .ipa files from a week-old back up so I *do* have those), how can I best maintain my 1G with the working apps I have now? Do I *never* upgrade apps/iOS on the 1G again? How can I tell before upgrading (short of a warning: "Not for 1G devices")? And, further, since my new 4G arrives Monday (crossed fingers), how can I have the most current apps for it and still maintain the 1G at a functional state? Can iTunes keep two sets of the same apps (old and new) in one iTunes account or will I have to set up a *new* iTunes account for the new 4G to be able to have the new apps on that one? Am I missing something here? (Entirely possible--I'm old enough to be a grandma to many of you folks posting here--but I sure appreciate lurking and the info shared!).