this procedure outlined in post 1 worked like a champ for me.

To repeat what has been said many times.
!.BACKUP
1.BACKUP YOUR DEVICE
2.DO it again.
3.Copy the files off your media card.
4.reformat it
5. back up third party apps (use DM)
6. Proceed with the instructions from Post1. Follow them completely. Go slow you have the time or you wouldnt be upgrading.
relax
follow directions.

It works.