How can I get tethering on my iPhone 3GS with firmware 3.1.3? I don't care what I have to do (jailbreak, go back to 3.1.2) but I heard that you can't do either of those for the 3GS on 3.1.3. Any advice? Please? I've been searching here, and elsewhere, for over an hour with no luck. I know the new JB is supposed to be out tomorrow but do we know what time? I actually need it for tomorrow. Gah, I'm a mess.