No, I’m not unaware of those schematics. What part of my owning and operating a cross platform computer support business for 40 years do you keep failing to grasp and attributing total stupidity about the business to me?
Rossmann is a technician, and probably very talented at de-soldering parts from multi-level circuit boards, but he is not an Apple Authorized Repair station. He has a small business. . . Limited to what he does, and a Right To Repair Advocate. If he wants to repair something, fine, have at it. He has no right to force has opinion of what a company does want to sell on that company. He does NOT own their intellectual property. He does not own their software, only a license to use it as per a contract he agreed to. He does not seem to grasp those legal concepts.
Apple is NOT in the business of selling its proprietary ICs or SoCs for other businesses to make boards or even other computers with or even to do repairs. That is NOT their business model and they are not required to make it their business model. Rossmann doesn’t like their business decisions and their engineering decisions. That’s his prerogative.
The specific design and programming that makes those chips proprietary to Apple have a lot to do with security, encryption, and keeping the devices inviolate from being unlocked by people who want to unlock them after stealing them. That is why only Apple Authorized Repair stations have access to these parts. It is a legitimate reason why certain Intellectual Property is limited in access and not sent out to third-party repair shops.
There are now five specific IC chips that are so limited because they have to be inter-registered to lock each device to the device by Apple. If they could be installed by just any John Doe repair shop, thieves could steal Apple devices like they could before the introduction of the iPhone 5S, and resell them on the black market unlocked. Now they cannot do that, making them much less the target of snatch and grab muggers. Before the introduction of the Apple 5S, the iPhone was the prime target of 95% of the mugging in New York City. Afterwards, only 5% of muggers even bothered to steal them.
Do you grasp the concept now???? There is a legitimate reason for it.
If Louis Rossmann wants to build a company such as Apple that operates under his rules, then he is free to try to do so. More power to him. Until then, he has to work with the companies and the laws that exist as they are.
re: “What part of my owning and operating a cross platform computer support business for 40 years “
So, this is what accounts for your obtuseness and lack of knowing what goes on in the REST of the world. All this makes a whole lot more sense now. You don’t have widespread experience upon which to make a knowledgeable judgement.
As to points about “security” and the like, revere engineering by knowledgeable folk (those with access to JTAG, chip removal and disassembly) and other in-plant tools used for development renders some of that moot; I have not looked into what hackers are able to do to the iPhones these days.
I think you are still unaware of a LOT of what used to be standard practice with regard to consumer gear ‘back in the day’; buying specialty ICs from Apple doesn’t compromise the security either, because, those with interest in that area have access to **whole phones** which can be reverse engineered.
I don’t think you know the design side of things either; that’s where I’ve spend some of my time in industry, the last stint with Cisco and the development of new infrastructure equipment.