How to upgrade batteries noted in first postNote on Upgrading the Flight Batteries:
You have to go through all your batteries to upgrade them to their new firmware (V1.3.11.0).
But, I found that it didn't come up with the message to enable me to upgrade them, unless I first turned-off the remote control (having just changed the battery in the drone) and also restarted my App device (an old smart phone) each time. Took about 2 minutes for it to realise it needed to upgrade the battery after booting up the drone.
If it gives you the message and you click to upgrade, the main drone light will flash green rapidly and you get a progress bar. Takes a few minutes.
Once, it just said, "Upgrading..." but nothing happened for 10 minutes. Had to restart everything, including the device running the App, to get it to work.
