Please note that this tutorial is only for iPhone 4 and 3GS, which run the system versions lower than iOS7.0, with 4-bit passwords! 3uTools can’t only jailbreak and flash iOS devices, but also provide a variety of useful...

Notes before flash:Please use iTunes to backup your important data before flash. Please directly connect your device to the computer via the USB cable, and don't use the extension cable or front USB. Ensure you remember your...