Download File: This is the most popular way to jailbreak ios4 and ios4.1 iphone 4 Sn0wbreeze 1.7 has just been released. This new update brings fixes for YouTube, iBooks and iTunes Error 2 which has been problematic for most users after iOS 4 jailbreak. Apart from this, this new version also brings support old bootrom Spirit jailbreak tool users who can now jailbreak their device on iOS 4 with Sn0wbreeze. For those of you who don't know, Sn0wbreeze for Windows is like PwnageTool for Mac which can be used to create custom pwned ipsw firmware files which can then be restored on iOS devices without upgrading their baseband. Instructions to jailbreak iPhone 3GS (old bootrom), iPhone 3G and iPod touch 2G (non-MC model) on iOS 4 using Sn0wbreeze 1.7 as usual are exactly similar to the last release. Please read all the instructions posted here carefully before upgrading and jailbreaking your phone on iOS 4. Once you have jailbroken your phone, guide for which is posted here. First you should download dotnetfx35 to overcome error 1600 1604 here is the link of dotnetfx35 if you donot install it it is the most chances that your iphone stuck 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 V 1.7 and the original iPhone OS 4 for your version of iPhone (download links given below). Move all these files to your desktop. Download link for snowbreeze 1.7 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 ...