Oh neat! Im kinda new here and this is more information than I expected. Thanks for the links and the info.
It looks like I got my DDM-25.12.0 on 4/19 and a priority battery management update ECG-25.2.5.7.1 only a few days prior on 4/15.
Thanks --After doing some more reading I feel better knowing that people have had success getting it back online by futzing with the 12v battery and fuse 13 in some cases. I feel like there's some someting to try rather than wait with crossed fingers.
As luck would have it it's back online. Parked it at work and was restored when I left at the end of the day. Hope not to see it again for at least another 24k miles.
My odometer screen is blank this morning. It seems to be the same thing described in the post I linked below. This sounds stupid but I didn't notice until about a mile from my house (I was screwing around connecting my newer phone) so I can't say if it turned on at first and later cut out...