Are you even allowed to do that with am android? For iPhones, the process of getting your phone to do things it's fully capable of doing but was intentionally programmed not to so that you'll have to buy a new phone sooner is called "jail breaking". Apple hates it if you jail break your iPhone. I think it goes against the user license agreement or something, although I'm not sure.
Does android have a different policy about that sort of thing? I find it a bit hard to believe, since it means you'll be even more satisfied with your phone, and therefore might be less likely to buy a newer, better model when it comes out, so you'll be paying less money.