Currently I've running the 1.1.4 firmware on my iPhone. But it seems as if the crack isn't working correctly (ZiPhone). I can't launch Safari or Mail or the iPod. If I try to do this I get an endless error. The phone turns of every ten seconds or so off and redisplays the home screen and makes it this way unuseable. This can only be repaired by an recovery via iTunes. I did this now for three times and always (after some time) I get this strange error. Before that I used 1.1.2 which worked great. So the question I have now is, how can I downgrade to 1.1.2?