Jailbreak iOS 4.2.1 iPhone 4 Untethered with GreenPois0n | iPhone

email Using ,next jailbreak direct you can jailbreak iPhone 4 iOS 4.2.1 untethered. So go after the known instructions underneath to see how to jailbreak iPhone 4 4.2.1 untethered by,by means of GreenPois0n.

Step-1

Update iPhone 4 iOS 4.2.1 with no updating baseband

When you update iOS 4.2.1 on by means of iPhone 4 petroleum determination too upgrade baseband of by means of iPhone 4 and the bad obsession is Unlock for the newest baseband is not obtainable at the moment. But present is a TrickyWay to preserve the iPhone 4 baseband as,at the same time as updating iOS and after that Unlock iPhone by means of UltraSn0w later.

Note: You have to preserve by means of iPhone 4 baseband 01.59.00 as,at the same time as updating iOS 4.2.1, additional wise you determination not be clever to unlock by means of iPhone at the moment.

See petroleum direct How to update iPhone 4 iOS 4.2.1 and preserve baseband. (after updating iOS, approach rear at petroleum time on the after that pace to create Jailbreak).

Jailbreak iPhone 4 4.2.1

Step-2

Download Greenpois0n to jailbreak iOS 4.2.1 iPhone 4

Step-3

Turn off you device

Run Greepois0n on by means of computer and and hit the Jailbreak button.

The best time to learn about Jailbreak iOS 4.2.1 iPhone 4 Untethered with GreenPois0n | iPhone is before you're in the thick of things. Wise readers will keep reading to earn some valuable Jailbreak iOS 4.2.1 iPhone 4 Untethered with GreenPois0n | iPhone experience while it's still free.

Read the on monitor instructions to put by means of iPhone in DFU mode

Now GreenPois0n in progress the untethered jailbreak procedure for iPhone 4

When GreenPois0n come to an end the iOS 4.2.1 jailbreak procedure after that you determination see the ,next monitor by means of a Complete! button

Find Loader app icon on by means of iPhone 4, tap on it and install Cydia.

Now you contain productively Jailbreak by means of iPhone 4 4.2.1. If you productively preserved by means of iPhone baseband 01.59.00 after that go after the link known underneath to unlock by means of iPhone 4.

How to Unlock iPhone 4 baseband 01.59.00

441049759 So now you know a little bit about Jailbreak iOS 4.2.1 iPhone 4 Untethered with GreenPois0n | iPhone. Even if you don't know everything, you've done something worthwhile: you've expanded your knowledge.