It bricked one of my batteries. If the update fails, which happened to me at the 67% mark, it will brick a battery. I have 2 middle lights on on one of my batters. They flash once every 15 seconds or so.
I did the upgrade a second time with my other battery, and it was fine. We have thunder storms, so I can't take it for a flight just yet, but it seems to be fine.
I tried the various solutions to un-brick this - the most successful being to try and do the update with the same battery again after having success with another battery, but I can't get the option to update again.
If I have to toss a battery out every friggin time they do an update, this will be the last update I will do.
Were we not suposed to receive some super update today that made the Mavic unstoppable.
I'm off to Staples where I bought my last battery to try and swap one out.
I'm really pissed.