MAVIC 2 UPGRADE WARNING!! IMPORTANT!!
-Saturday, July 27, 2019
PSA: If you have used DJI Assistant to upgrade your M2 to V01.00.0400 or 0300 firmware on or after 07/19/2019, you will not be able to downgrade it via NLD.
Sneaky DJI has changed the .400/300 firmware on their servers and put anti-roll back into it, this was previously not enabled. They did this without telling anyone.