Limera1n has been now released by Geohot and you could use it to jailbreak iPhone 4 4.1 iOS firmware using it. We have just tested it and are sharing the iPhone 4 4.1 iOS jailbreak instructions with you. Follow the steps given below to jailbreak iPhone 4 4.1 iOS using Limera1n.
1. Download Limera1n from here.
2. Connect your iPhone 4 with the PC.
3. Launch Limera1n and click on ” make it ra1n ” button.
4. Now you’ll have to enter recovery mode.
5. Press and hold the home and power button together.
6. Release the power button when asked.
7. Now wait till your phone enters recovery mode.
8. Now you could see the Limera1n app on your iPhone screen.
9. Launch the app and install Cydia to jailbreak iPhone 4 4.1 iOS.
That’s it! Now you’ll have a completely jailbroken iPhone 4.