I got the iphone 3gs from a friend. It wouldnt turn on. I got it in pwned dfu state. i tried all the tricks to restore it to 4.1 ( i dont know on which ios it was before my friend is a newbie). At the beggining i was getting an error 3194. I fixed it. Then started giving me errors 16xx type. Fixed that to. Afterwards i got an 1015 error once. Anyway, i managed to get a restore completion message without any errors. I cant remember though which ios I managed to restore to cause i was trying like 100 types ( custom, official, no_BB ones, jailbroken). Anyway, correct me if I 'm wrong but after completing restore, shouldn't the iphone just turn on? However, not only it didn't but on the contrary it's stuck in pwned DFU mode!!!! And when i try restoring it again from the beggining i am getting a 1602 error that JUST WON'T GO AWAY!!! I 'm depserate... 
plz HEEEEEELP!!!!
plz HEEEEEELP!!!!