look, what happened was, I installed fw changer on the ipod touch. then I uninstalled it (I always do this with an app). until here all ok. then, I don't know why, but i decided to turn my iPod touch off and on again. but when I turned on, white scrolls appeared and now home and lock buttons don't fix it, and my itunes doesn't detect it. what can I do to restore or put my iPod back to normal? this is urgent, please help me!