So... MacOSX 12 has caused my Macbook not to boot? Wunderbar.

Okay, I _might_ have fixed things on my Mac with the following:

1) another Mac
2) a good USB-C cable
3) an app called "Apple Configurator 2" (available from Apple)
4) an activity called "Reviving the T2 chip" on the bricked Mac

I'm both amazed that such a recovery activity exists for a bricked device (and is available to the end-user), and wondering how I even _needed_ it.


Things I've learned:

When you're upgrading your Mac to a new version of MacOSX, just to be safe, unplug the USB dock (that you connect with a questionable USB-3.0-Type B-to-USB-C cable) with the 10 things you've got on it first. Have the Mac unadorned whilst it is reborn.

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