Not sure how you got from my separation of unit from developer program Point A to your BYOOS Point Z. The developer program ≠ the operating system. The phone a

Not sure how you got from my separation of unit from developer program Point A to your BYOOS Point Z. The developer program ≠ the operating system. The phone at least in the case of iPhones is the hardware unit plus the software (the operating system, the secure boot environment, the baseband firmware, and the apps bundled with the phone).