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tbagman | 5 years ago

Confirmed; this is what happened to my 16" after this install. I needed to do a DFU restore (using Apple Configurator 2 -- you can download it to your hopefully spare MacBook from the app store) to get my mac back up and running. Unfortunately, for some reason, after the DFU restore, my 16" came back up to do a full reinstall, and I had to restore my files from backup.

Took a day, but all's well now.

discuss

bnt|5 years ago

I hope Apple doesn’t expect that everyone has a “Spare Macbook” laying around. I’ve been experiencing random system crashes when anything connects via TB3, and 3 random Kernel panics since the update.

floatingatoll|5 years ago

The SSD in a T2 Mac is encrypted in the same way that an iPhone is, so if the DFU crashes hard enough you’ll have to regenerate new keys and that’s equivalent to drive zero.

Glad it helped.

jplayer01|5 years ago

Is it possible to export a recovery key? Because this kind of failure simply due to a bad update shouldn't be acceptable.