Hey everyone, i was trying to jailbreak my iPod touch 4g running 4.2.1 firmware, but when i put it in dfu mode, my computer doesn't recognize it. I have successfuly jailbroken it once, but i decided it was worthless without cydia working, so i restored it to factory default through iTunes. Now that greenpois0n is out, i tried to use it to jailbreak it again. Since it didn't work in greenpois0n i tried it in redsnow with the same result. Nothing will recognize it when it is in dfu mode. I can easily get it out of dfu mode and when it is turned on, my computer does recognize it. If you know what my problem is, please help. Thanks!