Chinese iPhone hacker Loktar_Sun has released a method for unlocking a jailbroken iPhone by yourself using Sam Bingner’s SAM (Subscriber Artificial Module) package, leaving no need to wait for AT&T to unlock you iPhone and non-AT&T users are no longer left with nothing.
Informing via Twitter, this unlock technique has been verified by iPhone Dev Team member MuscleNerd as he was able to unlock his iPhone 4S and get it running on T-Mobile’s network. Following is the tutorial to get the unlock process started.
How to unlock your iPhone 4-4s With Any BaseBand
Step 1: Install Sam Bingner’s SAM (Subscriber Artificial Module) package from repo.bingner.com.
Step 2: Enter SAM by either going through the settings menu or find the SAMPrefs icon on your springboard. You will need to have the SIM card you intend to use in your phone.
Step 3: Go to utilities and select “De-Activate iPhone”, your ActivationState under “More Information” should now be “Unactivated”
Step 4: With SAM enabled, choose “By Country and Carrier” in “Method”; find your carrier, for some carriers operating more than one Carrier ID you may need to select “SIM ID”; if you pick the wrong one this won’t work.
Step 5: Go to More Information”, copy or write down the IMSI in “SAM Details”, then tap “Spoof Real SIM to SAM”.
Step 6: Go back to the main SAM screen and change your “Method” to manual. Paste or enter the IMSI string we saved in Step 5.
Step 7: Connect your iPhone to your computer and allow iTunes to activate it, double click “Phone Number” parameter at the main device screen and make sure that the ICCID matches that of your SIM card. If not you need to start over from Step 1.
Step 8: Unplug your phone, close iTunes.
Step 9: Disable SAM. The source article says to uninstall SAM and delete your lockdownd profiles; it’s unnecessary.
Step 10: Connect your phone to iTunes again, you should get an error saying that your phone cannot be activated. This is normal. Just close iTunes and open it again.
Step 11: You should see signal bars in a short time, congratulations.
Step 12: Push notifications may stop working after this procedure but can be easily restored by “clear push” utility in SAM followed by connecting to iTunes.
The SAM package can be downloaded by adding the following source to Cydia:repo.bingner.com