My two teenage sons thought that while the wife and I were away they would jailbreak their iPod touches (2nd gens). Well, they freaked out and tried to unjailbreak. They were using Greenpois0n and now both of their iPods are stuck on the skulls. They both restart every 10 minutes or so and then go back to the apple skull. Is there any fix for this? They are not recognized by iTunes so I am stumped. I have tried to put them in that DFU (or whatever it is). I am running an iMac with the latest version of iTunes. Thank you in advance.