- Downgrade your firmware from 1.1.2 to 1.1.1
- Jailbreak & Activate, then upgrade back to 1.1.2
- Ready the Stealth SIM card and your own sim card
- Cut the little corner of your sim card
- Tape your sim card on Stealth SIM by adhesive paper
- No Preloaded Applesaft or any programing need
- Your sim card can still use in other phone as normal without the Stealth SIM
- LAST STEP - Run installer and install "iworld"
- Enjoy :)
Your Second option is http://www.iphonesimfree.com/. They provide a full tutorial on how to use their product. Please remember that you use these products at your own risk. The guides and software i provide on this blog are free and have been tested by millions around the world, so if a problem comes up, a fix can always be found. iphonesimfree and stealthsim provide customers support but i do not know the quality.