Hi I was thinking of upgrading my firmware to 3.1.3 so I can tether using MiWi but I want to sell my phone somewhere down the road. What would be the most profitable solution... Stay where I am or upgrade to 3.1.3? From what I've read, I'm think I can move to 3.1.3 retaining my baseband using Pwnage...is that correct.. I have not done any prep work like backing up files using...can't remember what that's called. I also have an iPad 3G(unjailbroken at the moment but would like to jailbreak in the future) and my husband just upgraded iTunes to 9.1.1 thinking that may cause problems..... Could someone give me a recommendation on the smartest way to update but keep my jailbreak and ability to unlock the iPhone 3G? Or should I just stay where I am and forgo the tether and ability to use updated apps till I sell it?