Hi, went out to fly today and a warning showed saying I need to update my battery, any advice on how and where to find the correct update?

Thank you in advance

All you need to do is swipe the button on the mobile device screen and you're done.  Sometimes it happens if you've updated the AC+RC and sometimes one or two batteries may also need to be updated. It will probably will say 'Inconsistent firmware'.

A message will pop up if the aircraft and battery firmware are not matched, please slide the bar and refresh.