Ziphone is a very popular tool for jailbreaking and unlocking your iPhone. It is a free tool and you can download it on your Windows based PC to complete the unlocking procedure of your iPhone. However, it makes sense to make a back up copy of the content of your iPhone before proceeding to unlock or jailbreak the device using Ziphone.
Download Ziphone 64 bit for Windows here and jailbreak or unlock your iPhone to enjoy the new features and capabilities on the same old device. Remove the restrictions imposed upon the device by Apple and even start using the SIM of the carrier of your choice to save on your hard earned money.