After you unlocked it, it was no longer locked, and you could do the install. It had to be unlocked for that part. Many phones have no available unlock.

Also connects to cloud for model that controls the backdoor. Might be replaceable with a local server, but still.

If you’re storing, then offline, read only, checksummed and preferably encrypted. And above all, several tested backups. I’m partial to making erofs images from dirs, but any archive that fits the content type works.

For the random access cache on top, whatever.

At least this time it has a few terms that people might not know. Usually it just spasms obvious trivialities.

And the manufacturing. Forgotten Weapons is a brilliant channel not just because of the sheer quality and variety and humour but because Ian will actually explain and show the functioning and ideas behind the crazy mechanisms that have been made over time.

But also doable and works as an excuse for all kinds of enforcement.

I’ll mention https://armbian.com/boards/cubietruck as that’s probably the best SW source for most boards. No idea if hw docs were stashed by someone.