Thursday, February 10, 2011

How to Untether + Kill Your iPhone 4.2.1 Jailbreak with RedSn0w

One of our customer had successfully killed off his expensive Apple iPhone 4 by following the a free website showing people how to unlock his Aussie iPhone 4, which was about three weeks old.
WARNING:  This posting is strictly for academic review and reading pleasure only.  You are solely liable on unlocking your iphone.  The blog author will NOT be liable for your own action to unlock your iPhone 4 at home; we advice you to let the pro do the job!  So, please be warned!
The following were the steps he used
The long-awaited RedSn0w untethered jailbreak for iOS 4.2.1 was released earlier today by the iPhone Dev Team. As we mentioned before, it is still a beta version, which means it is very unstable and causes a few noteworthy bugs.
We’re aware that some of you are true dare devils so we thought it’d still be a good idea to post a guide on how to untether your iPhone. This step by step tutorial will show you how to untether your iPhone 4.2.1 using RedSn0w. This only works for the iPhone 4, iPad, and iPod Touch 4G…
Note: You will need a Mac to use this tutorial, this currently does not work on Windows machines.
Step 1: You will need to be already on iOS 4.2.1, so if you have not done so, update your iPhone firmware to iOS 4.2.1 via iTunes update. Next, jailbreak your iPhone running iOS 4.2.1 with Redsn0w using this tutorial. You may want to use Redsn0w beta 0.9.6b6 which addresses a battery drain issue.
Step 2: Download RedSn0w 0.9.7b1 from our downloads section and make sure your iPhone is connected to your Mac.
Step 3: Download usbmuxd, open a terminal window on your Mac, and navigate to the python-client directory inside the extracted usbmuxd folder.
Step 4: In your terminal window type the following commands:
chmod +x tcprelay.py./tcprelay.py -t 22:2222
You should now see a dialogue that says “Forwarding local port 2222 to remote port 22” (see screenshot above). This is a very important step, if you run Redsn0w without this running, you will have to restore to stock firmware, and try again.
Step 5: Execute RedSn0w 0.9.7b1, and browse for your iPhone 4.2.1 firmware. It should be in the “~/Library/iTunes/iPhone Software Updates” section on your mac. If you don’t have it on your Mac, you can download it from our downloads section. Once the IPSW file has been identified successfully, click next.


Professional Apple iPhone 4 Jailbreak
1, Huron Street, Takapuna 0622, Auckland
Remote unlock for HTC, BlackBerry & Google Android
Mobile: (021) 117-2222
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