The other day I installed the new 3.0 firmware for my iPod Touch using a website. After installing it, all my apps, music, videos, and pictures were gone. Then today, I jailbroke my iPod and Cydia was now avalaible and I downloaded some stuff. Then I went to one of my apps that I downloaded the other day and it opened then closed. The same thing happened to my other apps. What can I do???