I have managed to jailbreak my iPhone 3G on iOS 4.2.1 using Redsn0w RC18 on Windows 7. I got iPad baseband and Cydia running on my device. However, after restarting, the device failed to boot and now I am stuck at recovery mode screen with iTunes logo and USB symbol. I tried to put my iPhone in DFU mode then selected to restore settings but ended up in iTunes error. Please help. Thanks.
Asked by: Darius from Breaux Bridge, Louisiana
Step 1: Download Sn0wbreeze 2.2.1 for Windows from here.
Step 2: You will also need to download the stock iOS 4.2.1.
Step 3: Launch Sn0wbreeze, close the credits, and then Browse for the downloaded stock 4.2.1 IPSW.
Step 4: Once browsed, Select Simple Mode.
Step 5: Let Sn0wbreeze create a custom 4.2.1 IPSW.
Step 6: The new custom IPSW will be placed on the desktop once done.
Step 7: Follow the on-screen instruction to put your iPhone in Pwned DFU mode.
Step 8: Once in PWNED DFU, iTunes will automatically detect your iPhone in recovery mode.
Step 9: Hold the Shift button on your keyboard and then click on the Restore button in iTunes.
Step 10: Browse for the custom IPSW on your desktop.
Step 11: Now, all you have to do is wait till iTunes completely restore your iPhone to iOS 4.2.1.