Software Update to install Tahoe 26.7 fails on a blank screen

So, interestingly I was curious about whether 26.7.1 would solve the problem, and...
I forgot that I had a VM running the update process (from 26.6.2).

Interestingly, I got on to my computer this morning and my VM was sitting at at 26.7.1. And is seemingly responsive. My host is also 27.0.1

So, for anybody having this problem, maybe try letting the update process run overnight?
Didn't work for me. I have a theory though: Hypervisors expose the real processing hardware and I'm wondering if the Apple Silicon chip has an effect on this. I've been trying an M2 Pro and an M5 Pro. What chip where you using when you got that update to work?
 
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