Install SnowBreeze 4.2.1 Jailbreak – Guide

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Steps to Jailbreak Iphone 4 4.2.1 – SnowBreeze 2.2 Jailbreak :

Install latest version of Itunes 10.1.2 on your pc . Sync your device and backup all data .
Download 4.2.1 ipsw file for your device and place it on your desktop
Download Snowbreeze 4.2.1 Jailbreak for Windows and run on your device. Make sure you have .Net installed on your PC . Download Link available on the same page for Snowbreeze 2.2 download.
Now in Snow breeze application windows choose “Expert Mode“.
Select the ipsw file downloaded in Step 2 and proceed by accepting the notice.
In the next steps you can check to “Activate the iPhone” if you are not on the official carrier . This will hactivate your phone .
Select “build ipsw” and allow SnowBreeze to make the custom ipsw firmware file for your device.
Next step after the custom ipsw firmware file is built , you have to Restore your device to this firmware .
Start iTunes and press hold “Shift” Button on your keyboard and click Restore on iTunes . This will prompt you to choose the ipsw file of the custom-built firmware you just created with Snowbreeze. Select the appropriate file and allow iTunes to restore it to your device.
You phone will now restart for the changes to take effect .
Restore your device to the backup created earlier in Step 1 to get back all data from your previous sync .

Update :

If you are getting Error 1601,1604,1600 , then you should download iReb RC 3 on your Windows PC and follow the instruction before restoring to the custom-built firmware . This will help bypass the above errors and allow smooth restoration for your jailbroken device .

If you are facing trouble in following the tutorial above , feel free to ask a question in the Jailbreak Forum . For more information and updates , Subscribe to our Emails and Follow us on Facebook.