So I downloaded the new iTunes 10.5. I read that you can sync through wi-fi with your iPhone. So I plugged my iPhone into my MacBook using the cable and had a look at the new iTunes. I looked at a step by step guide online and it said pretty much all you have to do is tick the box that says something like 'sync through wifi'. Now here's the problem. I don't have that box. And I missing something painfully obvious? I'm not that good when it comes to stuff like this so that could be the case. As I said I have iTunes 10.5 and my 3GS is on 4.3.5. Any help would be greatly appreciated. Thanks guys.