Jailbreak iPhone, iPod Touch, iPad

These are step-by-step instructions on how to jailbreak iOS 4.2.1 on iPhone 3GS, iPhone 4, iPad, iPod Touch 2G, iPod Touch 3G, iPod Touch 4G using Greenpois0n for Mac OS X. Tutorial for Windows users is available here. All the steps are the same for all devices.

Greenpois0n has been updated to support the iOS 4.1 and iOS 4.2.1 firmware. Use Limera1n if you want to jailbreak iOS 4.0, iOS 4.0.1, iOS 4.0.2.

Remember: Greenpois0n recommends a clean restore before continuing.

Unlockers: do not update to iOS 4.1 or iOS 4.2.1 if you need the unlock. Ultrasn0w does not support that baseband yet. The only exception is the iPhone 4. You can unlock iPhone 4 with iOS 4.1 using ultrasn0w. Experienced users can also try update to iOS 4.2.1 without upgrading your baseband by using TinyUmbrella. Start TSS Server->Start iTunes->Plug in your iPhone->Restore 4.2.1->Error 1013->Put phone into DFU Mode->Launch Greenpois0n.

We are not authors of this app. We do not promise that everything will go well, use this tutorial at your own risk.

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These are step-by-step instructions on how to jailbreak iOS 4.2.1 on iPhone 3GS, iPhone 4, iPad, iPod Touch 2G, iPod Touch 3G, iPod Touch 4G using Greenpois0n for Mac OS X. Tutorial for Windows users is available here. All the steps are the same for all devices, we will cover iPhone.

Greenpois0n has been updated to support the iOS 4.1 and iOS 4.2.1 firmware. Use Limera1n if you want to jailbreak iOS 4.0, iOS 4.0.1, iOS 4.0.2.

Remember: Greenpois0n recommends a clean restore before continuing.

Unlockers: do not update to iOS 4.1 or iOS 4.2.1 if you need the unlock. Ultrasn0w does not support that baseband yet. The only exception is the iPhone 4. Experienced users can also try update to iOS 4.2.1 without upgrading your baseband by using TinyUmbrella. Start TSS Server->Start iTunes->Plug in your iPhone->Restore 4.2.1->Error 1013->Put phone into DFU Mode->Launch Greenpois0n.

We are not authors of this app. We do not promise that everything will go well, use this tutorial at your own risk.

Step One
Open your web browser and download the latest Mac version of GreenPois0n from here.

Step Two
When prompted save the download to your desktop.

Step Three
Double click the downloaded greenpois0n-osx_rc5.zip file to extract the archive. Then double click greenpois0n icon from the desktop to launch the application.

Step Four
Connect your iPhone to the computer, power it off. Then click the large Jailbreak button in greenpois0n app.

Step Five

You will now be instructed on how to place your iPhone into DFU mode. You will be asked to press and hold the sleep button (power button) for 3 seconds.

Now continue holding sleep button and and press home for 10 seconds.

Release sleep button and continue holding the home button. Do not release the Home button at this point!.

Step Six
Once your iPhone is successfully in DFU mode the jailbreak will begin. You need to continue holding the home button.

Step Seven
Now once Greenpois0n informs you that it has completed the jailbreak you can release the Home button.

Click the Complete button to close the application.

You’ll notice some text scrolling on your device.

Step Eight
After the iPhone restarts you’ll see a new Loader application on your Springboard. Press to launch it.

Step Nine
Select Cydia then press the large Install Cydia button that appears. Now Cydia will be downloaded from internet, so you need internet connection through wi-fi or edge/3g.

Step Ten
Once Cydia has installed successfully you can remove Loader by pressing the Options button then the large red Remove Loader.app button.

Step Eleven
Restart your iPhone and run Cydia. Let it do all the necessary updates.

You’re done!

Update:To change the boot logo back to Apple: install “Apple Boot Logo” from Cydia, then go to Settings-BootLogo and select Apple Logo.

The Chronic Dev-Team has finally released the new version of Greenpois0n, which features a full untethered jailbreak for iOS 4.2.1. No SHSH blobs needed. The exploit used has already been patched in iOS 4.3, so it not work on future iOS 4.3.

You can jailbreak iPhone 4, iPhone 3GS, iPod Touch 2G, iPod Touch 3G, iPod Touch 4G, iPad and Apple TV 2G. Unlike redsn0w 0.9.6 this is untethered, so there is no need to connect iOS device to a computer after restart.

There is only Mac OS X version available. Chronic Dev-Team will release Windows and probably Linux version soon.

Unlockers: do not update to stock iOS 4.2.1. You should keep your baseband version. Wait for new version of PwnageTool.

You can download GreenPois0n RC5 from here.

UPDATE: Step-by-step tutorial

The Chronic Dev-Team has announced via twitter an untethered jailbreak for iOS 4.2.1. This should work for iPhone 3GS (new bootrom), iPhone 4 and iPad. And it will not require saved iOS 4.2b3 SHSH keys.

The untether is demoed in the video below. It’s a result of a collaboration between @0naj, @p0sixninja, and @pod2g. P0sixninja has previously said it will not require iOS 4.2b3 SHSH blobs.

A small bug with wifi still remains. They will release utility as soon as they fix it.

Here is a video proof:

The iPhone Dev team has just released the second beta of their untethered RedSn0w jailbreak (the first beta has been released few hours ago and has more bugs).

New jailbreak is called “Jailbreak Monte”, as it uses new “backup method”. The iPhone Dev Team warns that their beta-version is not a general release and you should back up all your media before using it. There are also other limitations and bugs:

• The beta is limited to iPod touch 4G, iPad and iPhone4;
• The team asks not to participate in testing if you rely on the ultrasn0w carrier unlock;
• The bluetooth functionality is disabled due to sandbox problem;
• iPod player works only on iPod touch 4G;

To use this version of jailbreak Cydia should have your 4.2b3 SHSH blobs saved on file and following:

“You must already have the usbmuxd software installed and running on your Mac (this requirement will eventually go away too). The correct invocation of the relay is just as that page says: “./tcprelay.py -t 22:2222”.  If the relay isn’t installed or running correctly by the time the redsn0w ramdisk has started, you’ll need to restore to stock FW again to try it again. Please test it beforehand to save yourself some time!”

Now, if you’re ready to apply this version of jailbreak, upi can download redsn0w 0.9.7 beta here.

After downloading and applying just select “Jailbreak Monte” to try out the untether.

The iPhone Dev team asks to test it after a fresh restore in order to keep track of the variables involved. Be careful!

By the way, iPodUplink has posted a video where you can see how to jailbreak your device with the latest version of redsn0w:

MuscleNerd from iPhone DevTeam tweeted that an untethered jailbreak solution for iOS 4.2.1 will be released soon, probably next week.

scotty6kids78: @MuscleNerd are we any closer to the unteathered #jailbreak for the new #ios4.2 on #iphone4 ?

MuscleNerd: @scotty6kids78 it’ll be here by Xmas (not because we’re sitting waiting for Xmas, but because it’s achievable deadline)

This untethered solution will be applicable to all current iOS 4.2.1 devices, including iPhone 4, iPhone 3GS, iPad, Apple TV 2G and iPod touch 4G. We will keep you updated.

Currently iOS 4.2.1 jailbreak for iPhone 4, iPhone 3GS new bootrom, iPad, iPod 3G/4G is a tethered jailbreak. That means if you have to reboot your device, it will show a “connect to itunes” logo until you run the jailbreak software again. Musclenerd from iPhone DevTeam has announced that untethered jailbreak for iPhone iOS 4.2.1 is ready. Unfortunately this will be only for those who saved 4.2b3 SHSH keys via Cydia or tinyumbrella.

Got “backup plan” for untethered 4.2.1 JB working (video coming up). Uses mysterious 4.2b3 hashes Cydia kept for you.

“Backup plan” because hacker comex is working on a more extensible jailbreak. We’ll keep you up to date with more information as it develops. For now you can watch the proof video:

These are instructions on how to jailbreak and unlock your iPhone 3G on iOS 4.2.1 using PwnageTool 4.1.3 for Mac OS X. This tutorial will explain how to upgrade your baseband if needed for an unlock.

Step One
Make a folder called “Pwnage” on the desktop. Download a couple of things:

• PwnageTool 4.1.3 from here

You will also need the 4.2.1 iPhone firmware.

• iPhone 3G iOS 4.2.1: iPhone1,2_4.2.1_8C148_Restore.ipsw

If you are on the 05.14 or 05.15 baseband you will also need the iPad 3.2.2 firmware. You can find out your baseband version in Settings -> General -> About -> Modem Firmware.

• iPad iOS 3.2.2: iPad1,1_3.2.2_7B500_Restore.ipsw

When downloading the IPSW file, it is best to download it with Firefox since Safari often auto extracts it!

Step Two
Double click to mount PwnageTool then drag the PwnageTool icon into the Pwnage folder.

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In iPad OS 4.2 ‘Orientation Lock’ was changed to ‘Mute Switch’. If you want to change it back there is an app for that.

NoMute, a jailbreak only application, switches the controversial mute switch from iPad 4.2 into its former (and more useful) orientation lock. The plugin is free and you can get it from the BigBoss repository on Cydia.

By the way you can lock screen orientation without jailbreaking through multitasking panel – just push Home button twice, slide to the left and hit lock icon.

DevTeam worked hard for the last several hours and released jailbreak tool for iOS 4.2.1. It is redsn0w 0.9.6 b4.

As usual we remind all ultrasn0w unlockers please stay away from this official firmware. Wait for the ability to create custom 4.2.1 IPSWs that don’t update your baseband!

New redsn0w 0.9.6 b4 uses limera1n exploit and will successfully jailbreak all devices. The only problem is that it is a tethered jailbreak, which means you will have to plug it to a computer and rerun redsn0w on every reboot. This so called tethered or semi-tethered jailbreak. This condition applies to iPhone 3GS (new bootrom), iPhone 4, iPad, iPod touch 2G (MC model), iPod touch 3G and iPod touch 4G. Hackers are working hard to create untethered jailbreak for these devices. To use future untethered jailbreak you need to save SHSH keys for iOS 4.1 using TinyUmbrella utility or directly in Cydia.

Old devices like iPhone 3GS (old bootrom), iPhone 3G and iPod touch 2G (non-MC model) can be jailbroken-untethered right now using this latest version of RedSn0w.

You can download RedSn0w 0.9.6 b4 here.