Apple had just yesterday patched up their Activation Servers which are now immune to ICCID exploit which enabled any iPhone user on any baseband and iOS firmware to unlock their iPhone for a particular SIM card using SAM. If you have already unlocked your iPhone and saved the Unlock Activation tickets than you can restore your unlock status anytime in future if the need arises.
The requirements to restore unlock using SAM activation are :
- Your device should be Jailbroken as we will need root access.
- Your SAM Unlocked activation should be saved in a cloud based storage system like SkyDrive, Dropbox or Google Drive.
How To Restore Unlock Using SAM Activation Ticket :
Step 1 : Insert the unofficial SIM card for which you have the Activation ticket.
Step 2 : Launch iFile and than go to /var/root/Library directory and if you do not have iFile installed you can install it from Cydia and also get a free trial period. Tap on the ‘Edit‘ button present in the top right corner of iFile UI and select the Lockdown folder.
Step 3 : Now tap on the zip button to create a compressed file back up of the folder and than delete the Lockdown folder. Do make sure that the Lockdown folder backup has been created at the first hand.
Step 4 : Now launch your could based storage memory and locate the Lockdown folder you had created using the SAM unlock tool for the desired SIM card.
Step 5 : Open the recently created compressed file that contains the folder Lockdown and extract it at the default directory i.e. the Documents folder. Copy the folder in to the clipboard using iFile.
Step 6 : Now go to /var/root/Library and tap on edit and paste the files in the directory.
You have now successfully restored your iPhone Unlock using the SAM Unlock Activation Ticket. If you however face any error than launch SAMPrefs and go to /User/Library/Preferences and search for SAM. When you find it just delete the com.bingner.sam.plist file. if you do not find the named file than just let it be as in most cases it wont exist.
Now restart your iPhone and it will start showing the signal bars for the unofficial SIM card.