I did the firmware update and all was well, which is to say no changes that I could find. A day or two later, however, I began to have 30 second load times for iTunes and iTunes would hang on the "accessing iTunes store" notification. A refresh of the file system made no difference so I re set the entire system and that fixed the iTunes loading issue. At some point I did have a red screen on re booting or just turning the machine on. I took it to the MS store, the tech googled red screen and fixed the issue in a couple of minutes and all is again well. No idea how the safe boot things got changed. I certainly didn't do anything in that area.
Replaced the display and upgraded the SSD in a Book 2 15"