This update also allows the iPhone 3G (method to activate the phone without SIM card), so you can then install the UltraSnow Unlocker.
Follow the step by step guide posted below to jailbreak your iPhone and iPod touch using Redsn0w.
Step 1: Download iOS 4 (final version) for your version of iPhone and iPod touch. Download links are posted here.
Step 2: Update to this latest firmware using the iOS file you just downloaded via iTunes 9.2.
Step 3: Start Redsn0w 0.9.5b5-3 (download link given below) and point it to the original iOS 4 firmware file to proceed.
Step 4: Now select “Install Cydia” and click “Next”.
Step 5: Now make sure your device is both OFF and PLUGGED IN to the com
puter before you click “Next”.
Step 6: Connect your device in recovery mode by pressing the Power and buttons continuously.
At this stage you will be presented with a screen where you will have to quickly hold “Power” button and then while holding the “Power” button, you will now have to hold “Home” button too. Now after few seconds release “Power” button but keep holding “Home” button until installation begins.
Step 7: Sit back and enjoy while redsn0w will do all the rest for you. Once done,
your iPhone and/or iPod touch will restart automatically and you will find it jailbroken on the latest iOS 4 firmware.
If you notice a blank white icon for Cydia with no sources. Go to the Sources panel and add http://apt.saurik.com/cydia-3.7 repo. Now restart your phone and you should see the regular standard Cydia logo with all the sources now.
How to Unlock 05.13.04, 05.12.01 to 04.26.08 on iOS 4 Using Ultrasn0w
Follow the complete step by step guide posted here to unlock iPhone 3G, on iOS 4, on any baseband using Ultrasn0w 0.93.
Download redsn0w 0.9.5b5-3 for Mac
Download redsn0w 0.9.5b5-3 for Windows
Disclaimer: This guide is for testing & educational purposes only. I’m not responsible for any loss of important data or malfunctioning of your iPhone.
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