What a lot of people don’t realize though is that only a company with the force of Apple can get the kind of access to the hardware you need to write this level

What a lot of people don’t realize though is that only a company with the force of Apple can get the kind of access to the hardware you need to write this level of firmware. Apple writes every instruction executed by the processor from the moment it powers on until it’s booted. Unlike for instance devices running on the Intel platform, where the processor is running an entire OS behind your back, and you can’t turn it off.