Hiya, have a couple of questions about the new OS. I have a 8GB 3rd Gen iPod Touch 1)Can I jailbreak it? (OS4) 2)If I update to os4, will I be able to downgrade again to 3.1.3 or something? 3) Some of the features wont be available, but will someone find a way to make them available? Is it possible e.g. multitasking?