All my past missions have been erased after firmware update. After re-planning a mission, the drone took off but did not take ANY photos of polygon mission flight... First flight after update - Drone started to drift and I could not control it due to calibration issue. This latest firmware update will reset most everything on the drone including RTH altitude... Just a warning before you fly post update. Autel = issues, issues, issues... Im not ready to give up my evo 2 pro just yet...