Here is a new and recent variation. I had been upgrading my M4 iPad Pro with beta software from 18.0 to 18.1 to 18.2.
18.2 seemed a bit funky to me, so I decided to restore the recently released 18.1.
(I had already done the same, successfully, with my iPhone)
Instead of proceeding with the restore from my Mac Studio, the restore would terminate suddenly, sending me back to the Finder. No amount of hard resets, cable changes, or alternate restore ISPW files changed the result.
I took it to an Apple service centre, and they confirmed that the iPad was indeed bricked; however, covered by Apple Care, Apple will be sending a replacement device “within a week”. The definition of “bricked” that I use is that the device consistently returns to the “restore” screen (showing a picture of a cable and a computer) no matter what you (or others) do.
So, I’m typing this message on my OTHER iPad Pro, the one I keep in reserve just in case my rather agressive adoption of beta software bites me. I‘ve had good luck to this point, but got bit this time. I doubt I’ll learn from the experience.
This is a potentially rare case, but I’d be interested if anyone else has had a similar experience.