UNLOCK YOUR IPHONE 4GS
How to Jailbreak iOS 4.0 with Sn0wbreeze 1.6.1 on Windows1. Download iPhone 3GS 4.0 Firmware / iPhone 3GS 4.0 Firmware.
2. Download iTunes 9.2
3. Download Sn0wbreeze 1.6.1 for Windows
4. Put everything in one folder and name is “ios4.0”
5. Now Start sn0wbreeze 1.6.1 and click “blue arrow” and select “simple mode” and continue.
6. Now browse and select iOS 4.0 ipsw file downloaded in step 1 for your respective device.
7. Sn0wbreeze 1.6.1 will process 4.0 ipsw and will verify select ipsw file.
8. Now click on Blue arrow icon and wait for Sn0wbreeze 1.6.1 to complete processing.
9. Click yes/ no if you want to activate iPhone.
10. Let Sn0wbreeze 1.6.1 to complete rest of its process
11. Sn0wbreeze 1.6.1 will show the message once it has done, now select whether your iPhone 3G is jailbroken or not.
12. Now connect your iPhone 3G and enter in Recovery mode after that launch itunes and hold down shit while clicking the restore button on iTunes.
13. Now let iTunes complete installing iOS 4.0 custom firmware on your iPhone 3G/3GS.
Once your iPhone restarts, the jailbreak process will complete, now enjoy your jailbroken iPhone 3G/3GS 4.0.