Hi. My iPhone apps are exiting by themselves and freezing, so I want to do a restore. But, I want to keep my SMS and Contacts. I'm using firmware 3.1.3? How can I do this? I already spent 1-2 hours looking for a method and looks like I need SSH, which means I need to JB. I also spent another hour looking how to JB 3.1.3 but haven't found much. Tried to use blackra1n but when I press make it ra1n, the app just crashes. I tried redsn0w but it doesn't work. Can someone please help me out here?! Much appreciated!!!