My fw is 3.1.3. Recently i downloaded iBlank and i was curious to see what this "no shadow ios4" thing was i picked it and resprung and that was when everything started to lag. I managed to take it out and resprung but it is still lagging. I managed to get into safe mode where it was fine but normal mode is still lagging. I even tried restoring where i received an error basically saying i was unable to restore. How can i stop this lagging? btw the itouch randomly shuts off on its own.