I've got a 32 gig, white, AT&T 4s and I've got some selling questions. I've never sold a device such as this so I'm not sure the best route to take. I'm assuming Craigslist or Amazon are good options. Here's the main concern. My phone is out of contract and JB, but on iOS 5.1.2 (yeah, I missed the iOS 6 JB because I was lazy...). Would I be better served to just reset the device and leave the JB, or update to the latest iOS and then sell? Any ideas on what this model/size/color is going for on average?