iPhone Dev-Team Releases Tethered Jailbreak for iOS 4.3.4

The iPhone Dev-Team has released RedSn0w 0.9.8b3 which can perform a tethered jailbreak on iOS 4.3.4.

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For the convenience of kernel hackers like @comex and @i0n1c, we have a new redsn0w 0.9.8b3 that supports a TETHERED jailbreak for iOS 4.3.4 on all devices that have 4.3.4 except the iPad2. The vast majority of people will want to stay back at 4.3.3 because that's where the untetheredjailbreak is! There are no new features in 4.3.4 - only fixes for jailbreak exploits.

Also, this is a good time to remind everyone (since we're still seeing confusion about this): iPad2 owners with a baseband (3G or CDMA) cannot currently use saved blobs to go back to 4.3.3 once the signing window is closed. This is unlike every other device, so don't be confused! iPad2 owners with basebands should stay away from all updates to maintain your jailbreak!
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You can download RedSn0w 0.9.8b3 from here: (Mac, Windows)

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Apple Releases iOS 4.3.4 to Block JailbreakMe Exploit

Apple has released iOS 4.3.4 to block the exploit used by comex to jailbreak devices on iOS 4.3.3.

iOS 4.3.4 Software Update
Fixes security vulnerability associated with viewing malicious PDF files.

Products compatible with this software update:
• iPhone 4 (GSM model)
• iPhone 3GS
• iPad 2
• iPad
• iPod touch (4th generation)
• iPod touch (3rd generation)

For information on the security content of this update, please visit this website:
http://support.apple.com/kb/HT1222

*NOTE: iOS 4.2.9 is also out for Verizon iPhone 4s.

How to Jailbreak Your iPhone 4, 3GS Using JailbreakMe [4.3.3]

These are instructions on how to jailbreak your iPhone 4 and iPhone 3GS on iOS 4.3.3 or iOS 4.2.8 (Verizon CDMA) using JailbreakMe.

If you are already on iOS 4.3.3 or iOS 4.2.8 you can skip the first five steps of this tutorial.

*Remember that updating to iOS 4.3.3 will update your baseband and perhaps ruin your chances of an unlock. Use TinyUmbrella to update the iPhone 4 to iOS 4.3.3 without updating the baseband.

Step One
Create a Pwnage folder on your desktop and place the iOS 4.3.3 or iOS 4.2.8 (Verizon CDMA) ipsw in it.

You can download the ipsw for your device from here:
4.3.3 (3GS): iPhone2,1_4.3.3_8J2_Restore.ipsw
4.3.3 (4 GSM): iPhone3,1_4.3.3_8J2_Restore.ipsw
4.2.8 (4 CDMA): iPhone3,3_4.2.8_8E401_Restore.ipsw


Step Two
Connect your iPhone to the computer and launch iTunes.


Step Three
Select your iPhone from the list of devices on the left


Step Four
Hold down the Option (Mac) or Shift (Windows) key and click the Restore button.


Step Five
Select the iOS 4.3.3 ipsw from the Pwnage folder on your desktop and click Open.


Step Six
Once your iPhone is running iOS 4.3.3, press to launch Safari from your desktop.


Step Seven
Navigate to http://www.jailbreakme.com and press the Free button.


Step Eight
Press the Install button.


Step Nine
Safari will now close and Cydia will download and install.


Step Ten
Press to launch Cydia and enjoy your jailbroken iPhone!


***Thanks goes to Comex for his hard work on this impressive jailbreak!***

How to Jailbreak Your iPhone 3GS Using RedSn0w (Windows) [5.0b1]

These are instructions on how to jailbreak your iPhone 3GS on the 5.0b1 firmware using RedSn0w for Windows. Since iOS 5.0 has not yet been released these are instructions for developers only. This procedure will cause you to upgrade your baseband potentially ruining your chances for an unlock, it will not hacktivate so you must have your UDID registered with a developer, and it is tethered.

Step One
Create a folder on your desktop called Pwnage

Download RedSn0w from here and place it in the Pwnage folder. Likewise, download the latest 5.0 firmware from the iOS Dev Center and place it in the same folder.

5.0b1 (3GS): iPhone2,1_5.0_9A5220p_Restore.ipsw

Extract the RedSn0w zip file into the same folder.


Step Two
Connect your iPhone to the computer and launch iTunes.


Select your iPhone from the list of devices on the left. Now hold down Shift and click the Restore button. Restore is preferred as it won't create any wasted space on your iPhone.


Navigate to the Pwnage folder on your desktop and select the 5.0 firmware ipsw. Click the Open button to continue.


Step Three
Once iTunes has finished updating your iPhone to the desired firmware open the Pwnage folder on your desktop and launch the redsn0w application from the redsn0w folder we extracted earlier.


**Windows 7 users may need to run RedSn0w in Vista compatibility mode. You can do this by right clicking the executable and selecting Properties from the contextual menu

Step Four
Once RedSn0w opens click the Browse button


Step Five
Select the 5.0 firmware ipsw we placed in the Pwnage folder on our desktop then click Open.


Step Six
Once the firmware has been verified click the Next button to continue.


Step Seven
RedSn0w will now prepare the jailbreak data


Step Eight
From this window you can select the jailbreak options you would like. Make sure Cydia is selected and click the Next button to continue


Step Nine
Please plug your iPhone into the computer and make sure its OFF then click the Next button


Step Ten
RedSn0w will now guide you through the steps to get into DFU mode.


Hold down both the Home button and the Power button for 10 seconds.


Release the Power button and continue holding the Home button until RedSn0w detects the device.


Step Eleven
Your iPhone will now reboot


Step Twelve
RedSn0w will then begin uploading the new RAM Disk and Kernel.


Step Thirteen
Once this is complete you will be notified that RedSn0w is done. Click the Finish button. When your iPhone finishes rebooting (5 minutes or so) it will be jailbroken with Cydia on the SpringBoard.



BOOT TETHERED:
Since this is a tethered jailbreak you must use Redsn0w to help you boot back into your jailbroken device if its powered off for any reason. Simply connect your iPhone to the computer, launch RedSn0w, select Just boot tethered right now from the options window and click Next to have RedSn0w boot your device.



*As usual a big thanks to the iPhone Dev-Teams, Geohot, and Geohot for their hard work and contribution to the iPhone community.

**Windows 7 users can try running RedSn0w as an administrator in Windows Vista or XP compatibility mode if you experience any difficulties.

How to Jailbreak Your iPhone 4 Using RedSn0w (Windows) [5.0b1]

These are instructions on how to jailbreak your iPhone 4 on the 5.0b1 firmware using RedSn0w for Windows. Since iOS 5.0 has not yet been released these are instructions for developers only. This procedure will cause you to upgrade your baseband potentially ruining your chances for an unlock, it will not hacktivate so you must have your UDID registered with a developer, and it is tethered.

Step One
Create a folder on your desktop called Pwnage

Download RedSn0w from here and place it in the Pwnage folder. Likewise, download the latest 5.0 firmware from the iOS Dev Center and place it in the same folder.

5.0b1 (GSM): iPhone3,1_5.0_9A5220p_Restore.ipsw

Extract the RedSn0w zip file into the same folder.


Step Two
Connect your iPhone to the computer and launch iTunes.


Select your iPhone from the list of devices on the left. Now hold down Shift and click the Restore button. Restore is preferred as it won't create any wasted space on your iPhone.


Navigate to the Pwnage folder on your desktop and select the 5.0 firmware ipsw. Click the Choose button to continue.


Step Three
Once iTunes has finished updating your iPhone to the desired firmware open the Pwnage folder on your desktop and launch the redsn0w application from the redsn0w folder we extracted earlier.

**Windows 7 users may want to try running the redsn0w executable mode as an administrator in Windows Vista compatibility. You can do this by right clicking the executable and selecting Properties from the contextual menu.


Step Four
Once RedSn0w opens click the Browse button


Step Five
Select the firmware ipsw we placed in the Pwnage folder on our desktop then click Open.


Step Six
Once the firmware has been verified click the Next button to continue.


Step Seven
RedSn0w will now prepare the jailbreak data


Step Eight
From this window you can select the jailbreak options you would like.

Make sure Cydia is selected and click the Next button to continue.


Step Nine
Please plug your iPhone into the computer and make sure its OFF then click the Next button


Step Ten
RedSn0w will now guide you through the steps to get into DFU mode.


Hold down both the Home button and the Power button for 10 seconds.


Release the Power button and continue holding the Home button until RedSn0w detects the device.


Step Eleven
Your iPhone will now reboot


Step Twelve
RedSn0w will then begin uploading the new RAM Disk and Kernel.


Step Thirteen
Once this is complete you will be notified that RedSn0w is done. Click the Finish button. When your iPhone finishes rebooting (5 minutes or so) it will be jailbroken with Cydia on the SpringBoard.



BOOT TETHERED:
Since this is a tethered jailbreak you must use Redsn0w to help you boot back into your jailbroken device if its powered off for any reason. Simply connect your iPhone to the computer, launch RedSn0w, select Just boot tethered right now from the options window and click Next to have RedSn0w boot your device.


*As usual a big thanks to the iPhone Dev-Team and Geohot for their hard work and contribution to the iPhone community.

**Windows 7 users may want to try running the redsn0w executable mode as an administrator in Windows Vista compatibility mode if you experience any trouble.