Okay, let's get this straight. I have a 2g MC model iPod Touch (16gb) currently running jailbroken 3.0 firmware. Can I install and jailbreak 3.1.2 on this? I am also confused as to whether using blackra1n will only yield a tethered jailbreak and whether I will need to download (over wifi) Cydia after this. Also, what's wrong with 3.1.3? I have seen many guides on how to jailbreak this (redsn0w 0.9.4).