The latest version of Sn0wbreeze, v 1.6, aka pwnage tool for windows has been released by iH8sn0w. With Sn0wbreeze you can jailbreak iOS 4 on iPhone 3G, iPhone 3GS (on older bootrom, newer ones require a spirit jailbreak) and iPod Touch 2G. The iPhone Dev team has already released unlocks for all firmware basebands since OS 3.0 up to iOS 4 with Ultrasn0w, for more information check our previous guide to Unlock Baseband 04.26.08, 05.11.07, 05.12.01 and 5.13.04 With Ultrasn0w.

However,in order to install UltraSn0w unlock on iPhone 3G, you first need to jailbreak your iPhone. So here is a step-by-step guide to jailbreak iPhone 3G using sn0wbreeze v1.6 for Windows and Mac users.

Note:

This release is for all firmwares (3.0/3.0.1/3.1/3.1.2/iOS 4 pwned) for the iPhone 3G, 3GS and iPod Touch 2G. However, all users of the iPhone 3GS on firmware 3.1.3 are advised to steer clear of this guide.

Resources

• Windows XP, Vista, 7 (32 or 64bit)

• Sn0wbreeze V 1.6 Download Here [Fast Direct Link]
• iPhone 3GS iOS 4 Final Firmware Download Here
• iTunes 9.2 Download Here
• . NET Framework 3.5 Download Here

Guide to Jailbreak with Sn0wbreeze

• Download the required files and make a folder on Desktop called “iPhoneresources” or whatever you want and put the Firmware iOS 4 and Sn0wbreeze tool in iphoneresources folder.  Launch Sn0wbreeze (Windows Vista/7 user start the application in administrator mode) and connect your iPhone via USB to your PC.

• Click on the arrow to go to the next step, we now have to choose between Easy or Expert mode.
  • Simple Mode - Which provides step by step instructions as below and automatically detects your correct firmware and adds the unlock and activation and jailbreak with Cydia, automatically to your
    custom firmware.
  • Expert Mode – Where you can adjust the settings on the various different additions to the custom firmware – if you click through and do not change anything in expert mode it will make the same firmware as simple mode.
  

  sn0wbreeze 1.6

  

• Now we have to choose the firmware to select, click on“Browse” and find the firmware we downloaded earlier and click Open. After selecting the firmware, the application will automatically detect the device on which to apply the jailbreak, press next after the device is selected.

• Going in order, click on “General” and advanced once again. At this point, if you want to Jailbreak an iPhone, the application asks us if we want to hacktivate(unlock) our iPhone.
• Now you must choose how to Unlock your iPhone.
  • If you are using an Official service provider (i.e. AT&T) you do not need to Unlock the Baseband, hence select NO.
  • If You are using an Unofficial service provider (i.e. T-Mobile etc), then Select YES
• When you have selected to unlock option, select next. Sn0wbreeze will now update the baseband of your firmware 4.0 with the unlocked one.
• In the next screen you have a choice to install Cydia or Rock or both, (I would recommend  Cydia only)
  It is time to choose the packages to be included in your firmware. We can choose between:
  • Repository pre-added;
  • Manually add a repository (currently this feature is not available);
  • Add .Deb that you have on your computer.

• We’re done with all the customizations! We can now proceed to create the firmware, click on “Build IPSW”. Now we have to wait a few minutes to create the firmware and on completion of procedure you can close the application.
• Now put your phone in DFU/Recovery mode [we recommend DFU mode].

• How to put your iPhone in DFU mode:
  • Connect your iPhone to your computer.
  • Turn iPhone off.
  • Hold power and home together for 10 seconds (exactly).
  • Release power but keep holding home until the computers beeps (observed on a PC) as a USB device is recognized.
  • A few seconds’ later iTunes should detect your iPhone.
  • If the Restore Logo is present on the screen, you are in Recovery Mode, not DFU.

• Open up iTunes and you will see a warning message which says that “you have connected an iPhone in recovery mode”, click OK and move on.
  Then click on the Shift key on your keyboard, and simultaneously with the mouse on the Restore button in iTunes. Browse to the custom firmware you just created.
  Wait for iTunes to complete all procedures for extracting, testing and restoring of your iPhone / iPod Touch.
• Enjoy a fully jailbroken firmware after a restart of your iPhone.