Okay, so how do you verify that only the owner can do that, on the OS level, if the firmware is not first totally locked down? The security of iOS devices come

Okay, so how do you verify that only the owner can do that, on the OS level, if the firmware is not first totally locked down? The security of iOS devices comes from the fact that Apple has engineered the devices to behave a certain way when using Apple firmware and that that firmware can't be modified or replaced without the signing key of Apple. And Apple is making it clear that they are on the side of the consumer, not the three letter agencies.