Sn0wbreeze 3.1.3 has been released which can jailbreak iPhone 2G, 3G and iPhone 3GS on the latest iPhone 3.1.3 firmware. One thing which is to be noted here is that it will work with iPhone 3GS only if it has the older bootrom (non-MC model). iPhone 3GS users who have upgraded to the stock 3.1.3 are still out of luck.
Follow the simple step by step guide below to jailbreak your iPhone 2G, 3G and iPhone 3GS (old bootrom only) on iPhone firmware 3.1.3 using Sn0wbreeze. This version of Sn0wbreeze is for iPhones only. iPod touch 1G/2G (older non-MC models) can useredsn0w to jailbreak on 3.1.3 firmware. iPod touch 3G is currently not supported. Guides for jailbreaking iPod touch 1G/2G (older non-MC models) can be found here, here or here.
Step 1: Download and install the latest version of iTunes.
Step 2: Now start iTunes and sync your iPhone with your PC so that it backs-up all your important data including settings, apps, music, contacts and photos.
Step 3: Download Sn0wbreeze and the original iPhone OS 3.1.3 for your version of iPhone (download links given below). Move all these files to your desktop.
Step 4: Start Sn0wbreeze and select “Simple Mode”.
Step 5: Sn0wbreeze will now ask you to browse for your .ipsw file. Select the correct 3.1.3 firmware .ipsw file by clicking the “Browse” button. Sn0wbreeze will verify the selected file and then will present you with following screen.
Step 6: Click on “Yes” when Sn0wbreeze asks you “Do you want to activate your iPhone?” for hacktivation. Click on “No” only if you are on an officially supported carrier like AT&T.
Step 7: Sn0wbreeze will now create the custom .ipsw file for your iPhone which will be jailbroken.
Step 8: Now you will have to restore your iPhone to this custom firmware 3.1.3 that you just cooked using Sn0wbreeze for your iPhone. Click on your phone from the sidebar in iTunes and then press and hold left “Shift” button on the keyboard and then click on “Restore” (Not “Update” or “Check for Update”) button in the iTunes and then release the “Shift” button.
This will make iTunes prompt you to select the location for your custom firmware 3.1.3. Select that custom .ipsw file and click on “Open”.
Step 9: Now sit back and enjoy as iTunes does the rest for you. This will involve a series of automated steps. Be patient at this stage and don’t do anything silly. Just wait while iTunes installs the new firmware 3.1.3 on your iPhone. Your iPhone screen at this point will be showing a progress bar indicating installation progress. After the installation is done, iPhone will restart automatically and you should now have a fully jailbroken iPhone running on firmware 3.1.3.
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