Dragonfighter

Δοκίμασε το RecBoot

Δες εδώ: http://www.iphonehacks.com/2010/07/how-to-downgrade-iphone-3g-from-ios-4-to-iphone-os-3-1-3.html Run recboot (press left button) entering Recovery Mode set iphone to DFU Mode (power, home+power, home) Restore iPhone 3G using iPhone OS 3.1.3 firmware (use Itunes, shift+recover) iTunes will return error (normal) recboot (press right button) Exiting Recovery Mode Restoring Backup Και μετά κάνεις jailbrake στην έκδοση 4.1 ξανα μέσω του redsn0w_win_0.9.6b5