Hi there, My iphone will not turn on, its able to connect to my mac, only in dfu. After trying to restore itunes says: error 23. Read a lot of forums but always whitout a real solution... Most say its water damage but mine has a different story: Jailbroken, custom firmware 4.2.1 on baseband 6:15:00. Used it for a couple of months, never opened cydia. A friend of mine opened the cydia app and it started updating. Then the iphone slowly died in 2 days: First battery fast drainage and after the battery died it will not turn on again. Connected to usb power cable: able to connect to itunes in fdu: error 23 Anyone any clue? Thanks a lot!!