The battery update is a risk for that.Lates fw, not sure but im thinking that batteries are updated i got it before couple of days, it was used couple of times.
100% battery, i think that i had more than 80% of battery, it was about 1:37 mins of fly, on app details it says no crush. Conection started to litlle goes down on 400m, and on 900 its not posible to fly i was stoped there but unfortunetly Anafi stopped to, i had last position on maps, and im know terrain well, and found it in ten minutes, and now im not brave to fly like that untill we got some news about falling.
Therw is my topic "Anafi crush".
Try the one or the other low-hover flight near your place over softer ground, gras, bush, whatever can soften a fall.
From 100 till critical battery autoland