i jailbroke my iphone 3gs 2weeks ago but past few days the springboard kept crashing and accidentally i removed cydia somehow and yesterday, i used ispirit to remove the apps but when i reboot my iphone i was so shocked because all the iphone apps disappeared like messages,phone,settings,calculator etc. i wanted to restored or updated it but it says iphone cant not be updated, an unknow error accured. i really dont have any ideas now?? please help!!!