An iPhone 4 unlock tool for iOS 4.2.1 called redsn0w is able to jailbreak the latest iOS 4.2.1 firmware from Apple. By unlocking or jailbreaking your iPhone 4 you will be able to use experimental apps that you can add yourself from free repositories and the likes. Unfortunately, right now this iPhone 4 unlock tool only can perform a tethered jailbreak, which means everytime you need to reboot your iPhone or it loses battery life, you will need to reconnect the phone to your computer to boot it into a jailbreak state.

To learn more about this new and free jailbreak tool from Dev-Team Blog visit this link. Feel free to leave any questions or comments on this topic below. Thanks and God bless!

How To Get Your Restriction Code

Getting a free restriction code for your mobile phone may not always work. Alternatively, we recomend trying to find your unlock code on this website or by using the unlocking service below.