Apr 28, 2012
As of now, using the SAM unlock method was already blocked by the Cupertino servers. Tim Cook and his team immediately patched their activation servers that allowed unlocking iPhones via the SAM method. For the early birds that use the unlock method and manage to save the activation ticket immediately, you can still unlock your iPhone for whatever reason you might have. But for those of you who haven’t save the unlock activation ticket; you can no longer unlock your iPhone using SAM restricting you to a single mobile carrier.
If you’re one of those adopters of SAM unlock method and performed saving of the activation ticket, you can now put those saved files into good use. To unlock your iPhone again, read and follow the step by step procedures listed below. At this point you should know that you can only apply the procedures below on a jailbroken phone. If already restored your phone you should jailbreak it again before proceeding to unlocking it again.
For the unlucky ones, I just hope that MuscleNerd of the iPhone Dev Team could manage to find a way to hack into the activation ticket so that everybody can use a saved ticket from anybody else and use it on their iPhone. If this hack would become possible in the future this could lead the way to unlocking all the iPhones out there that are restricted only to a single mobile carrier. Having this said, I hope and I wished that MuscleNerd as well as other iPhone hackers is reading this post to see if they can do something about this.
WARNING: Do not blame anyone if something wrong happens to your device. The instructions presented here are for those people who understand what they are doing with their device.
Step 1: Locate the SIM card that was used during the initial unlock process. This is the unofficial SIM card, not the SIM that was provided by the official network.
Step 2: Open up the iFile app on your iPhone and use it to navigate to the /var/root/Library directory. If you don’t have iFile installed, it is available as a package from within Cydia with a free limited feature trial.
Step 3: When you are in the directory mentioned above, select the ‘Edit‘ button in the top right hand corner of the iFile user interface. When the directory is in edit mode, select the Lockdown folder.
Step 4: With the Lockdown folder selected, press the zip button to create a compressed file backup of the Lockdown folder. Once the zip file has been created, make sure to name it something that will distinguish it and is rememberable.
Step 5: Scroll to the bottom of the current directory and make sure that your zip file has been created and is available. If it is, then delete the entire Lockdown folder using the trashcan icon.
Step 6: Bring up your Dropbox folders and locate the Lockdown folder that contains the valid activation ticket, created by the unofficial SIM card that was used during the unlock process. Open up the recently created zip file using the iFile app once again and select the ‘Unarchiver‘ option.
Step 7: The contents of the zip file will now be extracted and dumped into the default directory, which in most instances is the Documents folder.
Step 8: Once again, select ‘Edit‘ in the top right hand corner of the iFile user interface before selecting Lockdown, and press the clipboard icon which would in turn copy the Lockdown folder. Tap the ‘Done‘ button.
Step 9: Still in iFile, navigate to /var/root/Library and select ‘Edit‘. Select the clipboard icon and then tap ‘Paste‘ before tapping the ‘Done’ button.
Step 10: If you still have the SAMPrefs package installed on the device, then navigate to /User/Library/Preferences and search for SAM. When found, make sure to delete the com.bingner.sam.plist file if you can find it (it may not exist in some cases). The purpose of this is to make sure that everything goes smoothly without any conflicts.
Step 11: Turn the device off, making sure that it is powered down entirely.
Step 12: Turn the iPhone back on and wait until it loads all the way to the home screen. After the device gains a network connection, it should be with the carrier of the unofficial SIM card.
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