This is a Tethered Jailbreak Method for iPhone 4 users only !!!!
Here ara the steps :
- Download and install, both, ..NetFramewrowk JAVA JRE 7 and Java JDK Tool x86 even if you have a 64 Bit computer (that's only if you don't have them installed already.)
- Download GeekSn0W
- Turn off Antivirus system and firewall, or your computer will delete the required files to continue the process, once you're done you can simply go into computer/uninstall programs and uninstall this program (if not your antivirus will.)
- Open GeekSn0w and Click Jailbreak, choose your device model, and put your device in DFU mode
- Now click jailbreak once again.
- Wait until ssh_rd tool is done (when you see Successful in GREEN letters)
- Your device will reboot and look like its in restore mode.
- Give it some time to mount the system files and upload the Jailbreak Data.
- Once its done you you'll see your device in recovery mode
- Wait till GeekSn0w prompts you to put your device into DFU mode and wait will it boots up with OpenSn0w (this will take some time, be patient)
- You'll see what must people call the Matrix Screen
- Now put your device into DFU mode once again.
- This time when your device turns on, scroll to the side, and you'll see Cydia
- You'll need to let the Cydia's file system prepare twice before Cydia can function correctly.
- Enjoy !!!!!!
For more explaination check out the video.