I have a 2g jb ipod touch with 2.2.1. I was browsing cydia and doing some updates when it suddenly froze. Pressing the home or sleep button did nothing so I held down the sleep button until the screen went blank. After this I could not wake it back up so I tried to put it into DFU mode to do a tethered restart (have not done untethered jb yet). Rslite did not recognize the ipod and I went into itunes which did not recognize it either (this was done on a mac). I reset my computer and still got no recognition of an ipod being connected to it. I tried plugging it into a PC and the PC brought up a message saying that the USB device was not recognized. Sorry if this is a repost but I have been trying to find info on this problem and only find solutions to other problems people have so any help would be greatly appreciated.