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Step-by-step Tutorial: How to Untether Jailbreak and Unlock iPhone 4 Using Sn0wBreeze 2.9.5 (Windows) [iOS 5.1.1]
Posted By admin On May 28, 2012 @ 3:15 am In All,Cydia,Firmware,Software,Tutorial,Unlock & Jailbreak | 129 Comments
Using this tutorial you will be able to create a custom firmware , untether jailbreak and unlock iOS 5.1.1 running on iPhone 4. This tutorial uses Sn0wBreeze 2.9.5 for Windows.
Sn0wBreeze will also preserve baseband version if you need carrier unlock.
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.
UPDATE: Please, consider reading our Jailbreak & Unlock FAQ , especially if you have questions or troubles.
Make a folder called "Pwnage". Download a couple of things:
Extract the Sn0wBreeze executable from zip archive.
Connect your iPhone 4 to the computer and launch iTunes.
Select your iPhone from the list of devices on the left. Create a backup by right-clicking on iPhone name in Devices (iTunes left pane) and choosing Back Up.
Remember that Sn0wBreeze will preserve the baseband (modem) version. If you don't want to preserve (f.e. you don't need unlock), go ahead and update to iOS 5.1.1 in iTunes:
If you need unlock skip this and go to Step Two.
If you are already have iOS 5.1.1 installed go to Step Two.
Open iTunes. Now hold down Option (Mac) or Shift (Windows) key and click the Restore button.
Navigate to the Pwnage folder on your desktop and select the iOS 5.1.1 firmware ipsw. Click the Open button to continue.
After iOS update iTunes might ask if you want to setup your iPhone as a new device or restore from the backup. Ignore this or choose anything. It doesn't matter, since you will restore once again to a custom firmware.
Double click on Sn0wbreeze exe icon to launch the application.
The application will launch. Click Ok button.
You will see the main window. Press blue-arrow button.
You will see IPSW selection menu. Click Browse for an IPSW button.
Navigate to folder with downloaded firmware, select it and click Open button.
Sn0wBreeze will start identifying the firmware.
Once the firmware is verified Sn0wBreeze will report the device information and firmware version. Check that this corresponds to your device. The screenshot below shows how this looks like for iPhone 4.
Press blue-arrow next button.
You will see the choice of 4 options.
Click on Expert Mode.
You will see the menu with General, Custom boot logos, Custom packages, Build IPSW. Some options might be disabled, if not supported with you device or firmware.
Click on General and then next blue arrow.
Here you can enable or disable several options.
Important: Choose Activate only if you need hactivation, if you do not plan to use your device with official  carrier.
Click next blue arrow button.
You will see a windows where you can install custom packages, that will be embedded to your custom firmware.
Click next. You are ready to create custom IPSW. Click Build IPSW and next button.
Wait while IPSW is being built.You can play PamMan game while you're waiting.
Then you will see Done screen:
Press Ok button.
Now you have to follow instructions to put your device into DFU mode.
Please plug your iPhone into the computer and make sure its OFF then click the Start button.
1. Hold down both the Home button and the Power button for 10 seconds.
2. Release the Power button and continue holding the Home button until Sn0wbreeze detects the device.
If you fail to put the device into DFU mode you can start again.
If you have followed the steps correctly, you will get the following message from Snw0breeze:
Close all opened windows of Sn0wbreeze and launch iTunes.
Select your device from the list of devices on the left. Now hold down Shift and click the Restore button.
Navigate to the Desktop folder and select the newly created custom firmware ipsw. The name will be sn0wbreeze_iPhone_4-GSM-5.1.1-9B208. Click the Open button to continue.
iTunes will now restore the firmware on your iPhone. This can also take up to 10 minutes. Once done you will be rebooted into jailbroken iOS 5.1.1!
After the restore you're done! Your device is jailbroken.
iTunes will ask if you want to setup your iPhone as a new device or restore from the backup. Choose Restore from Backup if you want to preserve your contacts and other  information.
Run Cydia . Let it do all the necessary updates.
To have access to the root file system of your iPhone (via file managers like iFunBox or iPhone Explorer ) install application called afc2add in Cydia.
If you need carrier unlock – install ultrasn0w via Cydia (if you do not need carrier unlock skip this step).
Ultrasn0w supports iPhone 4 baseband 01.59.00 and iPhone 3G/3GS basebands 04.26.08, 05.11.07, 05.12.01, 05.13.04, 06.15.00.
Do not forget to change your default password  if you've installed openssh.
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URLs in this post:
 Image: http://iphoneroot.com/wp-content/uploads/2012/05/iphone-3gs-windows-custom-sn0wbreeze-5111.png
 firmware: http://iphoneroot.com/category/firmware/
 Jailbreak & Unlock FAQ: http://iphoneroot.com/jailbreak-unlock-tutorials-and-faq/
 here: http://iphoneroot.com/utilities/#Sn0wBreeze
 iPhone3,1_5.1.1_9B208_Restore.ipsw: http://appldnld.apple.com/iOS5.1.1/041-6051.2012.0525.Cvby7/iPhone3,1_5.1.1_9B208_Restore.ipsw
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 Cydia: http://iphoneroot.com/category/cydia/
 iPhone Explorer: http://iphoneroot.com/tag/iphone-explorer/
 change your default password: http://iphoneroot.com/secure-your-jailbroken-iphone/
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