Iphone 3g stuck on apple logo BB 6.15 FW 4.2.1 . It was already unlocked and jailbroken. It was new.so no applications,songs or movies installed.It just switched off one fine day and got stuck on that apple logo. I can get it to go into the DFU mode. What should I do next. Do help me. And i had posted this somewhere in the forums but its not visible i searched everywhere.So if its duplicated,moderators plz. excuse. Do reply.Worried.