i really want to jailbreak my ipod, but i want to make sure that its safe before i do it. If i do it, will my 2 year warranty end? After i do it and use the apps and stuff and dont like it at all (which i doubt will happen) can i do a restore and go back to what it was before i jail broke it? o and my PC just crashed, and i do not want to sync it to my laptop because i have no songs or movies on it. can i jailbreak it using my laptop? or do i have to sync it first?