use an OBD reader with wifi. connect to the OBD wifi with your phone. use Bimmerlink app to open or close the valve/flap.
now you need to get down and unplug the wire after the flap opens. because apparently the flap closes automatically after you turn off the car and back on if the wire is still connected.
i tested this on F15 and pretty sure its the same across the board
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10' E92 M3 6MT
15? F15 X5 35i
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