Ok, I see there the batterie "fall from sky" issue as a reaction and need for a fw update.
Just it is (for me) the question, why the batteries need update, now, AFTER the latest bird fw update.
And do need the batteries this, if not on the one month old update, 6.6.5/1.6.4?
They did not need that before, or did they?
Still, I would really read about, in the change log