Whoo Hoo, S-OFF! Finally got it to work. Somewhere in all the posts I was reading, I got the wrong image I tried to flash, and I think I missed the (completely didn't see) the Charge only, and had it in disk mode.
Tried again tonight when I was fresh and all went the first time (after replacing the bad PB31IMG.zip that was way too small.
Went right through and now I am looking for a OS to load.
Thanks for the instructions at the beginning of the thread! Great Job.