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The urge to tear down the stack of cellphones I have and pull the boot flash chip hits me occasionally. It would be a substantial project, though, so I haven't done it. Yet.

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You have to do things. You can't sit on project ideas forever while they become obsolete. A lot of things on my project ideas file became obsolete while I didn't do them, and that is sad. I even had enough time to do them but still wasted it on places like HN.

I know. It hurts to let things die in my project backlog. But there's so much of 'life' outside the project log that I don't have time. I have to prioritize.

I feel the 'don't waste time on HN' thing. I'm working on it, minimizing social media usage, minimizing non-productive screen time.

They must have gone obsolete quickly as your account is only 4 months old

how far down the chain does the protection go? if you swap the flash chips can you just boot or do the other chips expect a signature upstream?

AFAIK there are signatures that are checked at the SoC level. In other words, it's not a write lock that can be bypassed by flashing the chips directly.

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