so what i did to try to jailbreak with sn0wbreeze then to recover it with the new ipsw... gave me some error and so i found out to run umbrella and it was working then something happened and now my iphone is just a black screen.. ive tried downgrading the software and itunes default restore but it gives me 1600 error code... please help? (also tried puting in dfu mode using ireb... not working and if last come to last... i did buy the full warrenty for the iphone, or am i screwed?