I downgraded my iPhone 3G to 3.1.3, which previously had cydia[so it mustve been jailbroken) It's not there anymore. It used to be OS4, and was painfully slow, but I realized even with all notifications turned on,(settings and on aim/textfree apps) it's not working. How do I get those notifications working? I am also wondering if I could get it jailbroken again? And if its possible to fix this using cydia on a downgraded 3G?