That's very interesting that I update the phone "at my own risk", since if you have a problem with the phone apple support will TELL YOU to update the iOS.
And no, the phone is not recoverable. It does not respond to the power button and cannot be restored or connected to the computer.
The question is again, how do I get apple to fix this? I'm well aware this is a user forum and I'm asking if any of the other well-documented cases of this happening to users have been resolved by apple as opposed to the end-user paying for support or for a new phone, which by the way is not happening. I've checked every source I can find short of calling the store and there doesn't seem to be any interest by apple to fix the well-documented issue.
The only outcome of this where apple does not foot the bill and fix everything will result in me cancelling every account I have with apple and telling everybody I know about this, because I'm sorry but it's not acceptable for an update to brick a 700$ piece of hardware.