You said that you needed to jailbreak the OS. I've asked why. You haven't supplied an answer yet. Do I need to quote your statement again?
The specifics of what those parts are and what you might do with them doesn't really matter, because whatever it is may be one day unsupported, broken, have a massive security hole in it etc. The fact is that you're locked out of something you own, and locked out of being a user of your device, which is against the very idea of an operating system.
Again, it's not that they need to jailbreak it. It's that jailbreaking shouldn't even be a thing. Locked down operating systems are for DVD players, games consoles and other peasantry. For your specifics, see everything that people got around aegis to do.