HI I was in the process of syncing ipod touch 1st gen jailbroken (16 gb) 2.1 to 2.2 on my mac, when it crashed. I disconnected the ipod and it is dead. No response whatsoever. I've plugged it in yet nothing - shows no signs of life. It won't power up, screen remains black. Is there anything I can do? It was purchased last December. Thanks for you're help.