There! Made it disappear!!
Samsung magician software does it's magic.
In defense of those who were "stupid, and chose to flash the firmware" the Magician software does run all the time by default and offers to "upgrade" (I think, I only have older 830/840's).
Maybe the firmware should require we step away from the friendly "everyday tasks" Gui, or challenge with a firmer level of "are you sure?", "do you have current backups?", "one last warning without backups you do risk total data loss - proceed y/N?"