Thats right chip. My model was the 02 model # and on 2 occasions it lost bind.
The first time on my LXone but I had just started her so I got it shut down suffering a little skin loss.
The second was with my Revo Platinum in full flight, which ended with it upside down at a million rpm until it went 'POP'
They say it only does it on model change but this is NOT correct.
I sent that one back to Horizons for repair and bought a newer version but in only a week it has 'Deleted' saved models.
One day you have them, the next..... Vanished.
So far no unbinding issues though, but I tell you if I lose my GRP or RB 928 then it'll be a lawsuit......
At this point I would like to say I LOVE the DX3R and have NO plans on ditching them. I still think they are the best radio for us middle intelligence drivers....