I upgraded firmware today on my Mavic Air 2 (to version 01.01.0700) The RTH function behaves quite erratically now. The drone turns to home when prompted, but it won't proceed toward home point until RTH is cancelled and I fly manually. There is also loss of vertical control. The drone no longer follows descent commands in RTH and wants to fly up to my pre-set 393' limit instead. Whaddup??? Is there any way to return to a previous firmware version?