Hi, I own an iphone 3gs,and yesterday i updated from 3.0 to 3.1.2. I restored and the synced back from itunes. And now my iphone asks for a Passcode (one with letters not the 4 digit one) I never set any passwards and i know i can just restore and make a "new iphone" but then all my calendar,contacts etc will be lost. Haw do i remove it ? Haw was it created? Any advice will be helpful. Please HELP Thank You.