I'm going to jailbreak my friends ipod using blackra1n. She has 2.x on it and I need to know if it would be untethered or not. My ipod touch is 3.1.2 and it's tethered but my friend never updated. She's still below 3.x. anyone know?
He actually sort of did vaguely kind of answer your question, although you can't exactly be faulted for not seeing how
1) Whether you'll have a tethered or untethered jailbreak isn't determined by your firmware, but rather your iBoot versionwhich is, in turn, a function of which device you have. Since your friend has 2.X, she must have a second- or first-generation Touch, which means she would have an untethered jailbreak no matter what version firmware she uses.
2) Blackra1n can only jailbreak 3.1.2, so you would need to update her Touch to jailbreak using it. But since iTunes will restore you to 3.1.3, your only options are to either find a 3.1.2 firmware file somewhere online and restore using that, or to use redsn0w to jailbreak instead. You could also try to find tools to jailbreak whatever version firmware she's using, but I haven't been part of the jailbreaking scene long enough to offer a helpful suggestion.