i have an iphone 3g,the passcode is locked because my little sister wrong press. it showing need to wait a long time to re-enter my passcode,so i decide to upgrade the firmware. unfortunely after i upgrade my iphone stuck on recovery mode and my itunes have a error 1015,i has tried to active it by redsnow,snowbrezze,ireb,tinyumbrella and some but still same.... any help please?? thanks~