Apple will soon disable restoring to iOS 4.2.1 for iPad and iPhone. In order to preserve jailbreak and unlock save your SHSH keys now! 4.3b keys might also help you in future untethered jailbreak.
You can do that using TinyUmbrella utility. Download it for Mac or Windows . Just run it and push “Save ALL SHSHs” button.
The other way is to save SHSHs via Cydia. Run Cydia and make sure the keys are saved (green line on the top).
Apple just released new iOS 4.3 firmware. Jailbreakers and unlockers should wait for new tools. Everybody else will benefit. iOS 4.3 has Safari speed improvements, AirPlay features, hotspot, Home sharing, a new option for customizing the iPad’s side switch to serve as a mute toggle or screen orientation lock and much more:
This update contains new features and improvements, including the following:
* Personal Hotspot
– Share cellular data with up to 5 devices (combination of up to 3 Wi-Fi, 3 Bluetooth, and 1 USB)* iTunes Home Sharing
– Play music, movies, and TV shows from a shared iTunes library on a Mac or PC (requires iTunes 10.2)* New AirPlay features
– Play videos from the Photos app including the Camera Roll album, iTunes previews, enabled third-party apps and websites on Apple TV
– Play slideshows from Photos on Apple TV using transitions available on Apple TV* Faster Safari performance with Apple Nitro JavaScript engine
* HD video out using the Apple Digital AV Adapter
– View 720p HD videos from Videos app, iPod app, Photos, YouTube, Safari, Keynote, and enabled third-party apps on an HDMI display* Ping features
– Push notifications for comments and follow requests
– Post and Like songs directly from the Now Playing screen
– Parental controls* New Settings
– Messages setting for number of times to repeat an alert
– iPad side switch setting to lock screen rotation or mute audio notifications and sound effects* Single tap conference call dialing with a pause to send a passcode
* Bug fixes
Products compatible with the software update:
iPhone 3G, iPod Touch 2G and iPhone 4 Verizon do not have iOS 4.3 update.
Here are the direct links to download iOS 4.3:
| device | version | release date |
|---|---|---|
| AppleTV(2G) (AppleTV2,1) | 03/09/2011 13:07:02 | |
| iPad (iPad1,1) | 03/09/2011 13:07:02 | |
| iPad2,1 (iPad2,1) | 03/09/2011 13:07:02 | |
| iPad2,2 (iPad2,2) | 03/09/2011 13:07:02 | |
| iPad2,3 (iPad2,3) | 03/09/2011 13:07:02 | |
| iPhone3GS (iPhone2,1) | 03/09/2011 13:07:02 | |
| iPhone4 (iPhone3,1) | 03/09/2011 13:07:02 | |
| iPodTouch(3G) (iPod3,1) | 03/09/2011 13:07:02 | |
| iPodTouch(4G) (iPod4,1) | 03/09/2011 13:07:02 |
UPDate: !
UPDate 2: Attention! We’ve received info, that Apple stopped signing iOS 4.2 for devices for which iOS 4.3 is available. This means you will not be able to restore to 4.2.1 without saved SHSH keys.
Using this tutorial you will be able to jailbreak iOS 4.2.1 running on iPhone 3G, iPhone 3GS, , iPod Touch 3G, iPod Touch 4G and iPad. Pwnagetool will also preserve baseband version if you need carrier unlock. If you have updated the baseband to version 06.15, you can use this tutorial. This tutorial uses PwnageTool 4.2 for Mac OS X.
We are not developers of jailbreak utilities, so we cannot assure that everything will work just fine. However we tried this tutorial on several devices and succeeded.
We will use iPhone 4 in our jailbreak tutorial. The process is the same for all devices.
Step One
Make a folder called “Pwnage” on the desktop. Download a couple of things:
The Chronic Dev Team has released Greenpois0n RC6.1, a new version of their ‘untethered’ iOS 4.2.1 jailbreak tool which now includes an update that disables Apple’s means of protecting the iBooks application from jailbreakers.
Recent Greenpois0n changelog:
Greenpois0n RC6.1 supports iPod Touch 2G, iPod Touch 3G, iPod Touch 4G, iPad, iPhone 3GS, iPhone 4, Verizon iPhone 4 (iOS 4.2.6) and Apple TV 2G.
You can download the latest Greenpois0n RC6.1 .
DevTeam released PwnageTool 4.2 utility. It is able to create a custom IPSW that can perform an untethered jailbreak on iOS 4.2.1. As usual it can preserve baseband version for unlockers. Devteam used the same method that was implemented in greenpois0n.
PwnageTool supports all 4.2.1 devices other than iPod touch 2G:
Jailbreak is even improved compared to GreenPois0n RC6:
DevTeam released PwnageTool 4.2 utility. It is able to create a custom IPSW that can perform an untethered jailbreak on iOS 4.2.1. As usual it can preserve baseband version for unlockers. Devteam used the same method that was implemented in greenpois0n.
PwnageTool supports all 4.2.1 devices other than iPod touch 2G:
Jailbreak is even improved compared to GreenPois0n RC6:
These are step-by-step instructions on how to jailbreak iOS 4.2.1 on iPhone 3GS, , iPad, iPod Touch 2G, iPod Touch 3G, iPod Touch 4G using Greenpois0n for Windows. Tutorial for Mac OS X users is available . 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.
The Chronic Dev-Team has released Greenpois0n for Windows which brings an untethered jailbreak to iOS 4.2.1 devices. You can jailbreak , iPhone 3GS, iPod Touch 2G, iPod Touch 3G, iPod Touch 4G, iPad.
You can download the latest version of GreenPois0n from .
Update:
These are step-by-step instructions on how to jailbreak iOS 4.2.1 on iPhone 3GS, , iPad, iPod Touch 2G, iPod Touch 3G, iPod Touch 4G using Greenpois0n for Windows. Tutorial for Mac OS X users is available . 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 Windows version of GreenPois0n from .
The Chronic Dev-Team has released Greenpois0n for Windows which brings an untethered jailbreak to iOS 4.2.1 devices. You can jailbreak , iPhone 3GS, iPod Touch 2G, iPod Touch 3G, iPod Touch 4G, iPad.
You can download the latest version of GreenPois0n from .
Update: