Their firmware can probably be updated in the same mysterious way AirPods firmware is updated. Roughly, be in the presence of an iDevice for a certain amount o

Their firmware can probably be updated in the same mysterious way AirPods firmware is updated. Roughly, be in the presence of an iDevice for a certain amount of time under unknown conditions. The advice on the internet is usually something like "leave your AirPods charging and have your phone connected to them when you go to sleep, and they'll probably be updated in the morning".