I couldn't find a thread on this nor did i find my answer in search. Any help from someone who knows the process would really be appreciated! Ive got an iPhone 4S with at&t that i purchased in october 2011. My contracts not up yet but I contacted at&t about unlocking the device this week. I got an email back from at&t stating that my device is approved for unlock and to restore from iTunes to complete the process. I understand restoring from iTunes does a full firmware update. My question is, will resetting the device through 'Erase all content and settings' and restoring from iCloud using the setup assistant have the same effect in unlocking the phone as restoring from iTunes? Thanks again! PS: What actually changes when a phone is unlocked? I assumed it would just be a software access change but does it in fact change code in the firmware?