I wondered about this myself too, as it's really contardicting what Tim Cook writes in his internal emails, that's made public.
Is it fully factual incorrect? unlocking phones pre IOS 8 is a totally different matter from post IOS 8 as far as I understand, could it be the case that it's been unlocked for pre IOS 8, where security measures as far as I know are totally different?
That claim refers to an article by
http://www.thedailybeast.com/
As fas as I read Tim Cook claims that Apple never unlocked iPhone with IOS 8 or later and that this is impossible to do...
Tim Cook wrote as follows:
Some advocates of the government's order want us to roll back data protections to iOS 7, which we released in September 2013. Starting with iOS 8, we began encrypting data in a way that not even the iPhone itself can read without the user's passcode, so if it is lost or stolen, our personal data, conversations, financial and health information are far more secure. We all know that turning back the clock on that progress would be a terrible idea.