Good news - did it!!! Thank you for the idea and extra push. Got out old MBP 2012 and it worked beautifully immediately - believe it or not dealer quote for doing this job for me...$350. But the software is slow, and it takes an hour or two with two guys (at least on my '03, some other years don't require bleeders open, mine does). My brakes don't feel any different, but I guess I have peace of mind and cleared codes with reset protocols for new ABS pump and such.
@getco you are a mad scientist and so cool you put these together, thank you (though I do recommend removing the M1 links, something just refuses to let that work right).