Maybe what that magazine means if the air-bag off switch. The bellow photo is on a German spec 135i with ISOFIX option.
I would think the rear seats are the same as a 135i. Btw... the rear seats also are split 60/40 and fold down - just like a 135i rear seats. At first it was reported that the 1M had fized rear seats. Perhaps this is the same sort of blunder.
Dackel