i think i have messed up with my iphone 3gs, i downgraded to 4.1 and then i realized that i was jb-ing it with 5.0 firmware so i decided to interrupt jb-ing process and it ended up to apple logo loop, phone remains on logo and then restarts itself, restoring gives 3194 error in dfu and in restore mode also, i think my phone is dead, any help?