Ok, so I have an iPhone 4, jailbroken, running the original 4.0 iOS. The other day a friend noticed it and said his other friend would gladly buy it off of me because of the original OS. he says he can 1.) get me a brand new unopened iPhone 4 + $100 cash or 2.) give me a used iPhone 4 obviously not running the 4.0 OS + $200 cash. I'm just wondering what on earth makes this OS so valuable and if I should trade it, I've put alot of work into this phone with specific upgrades that will make it very hard to get used to a new blank slate. Thanks for all your answers in advance - BigCat44