Settings -> Devices & connections -> Controllers & headsets -> (Select your controller) -> (Three dot menu) -> Update now.
(Blanked out the reflection of my garden)
Settings -> Devices & connections -> Controllers & headsets -> (Select your controller) -> (Three dot menu) -> Update now.
(Blanked out the reflection of my garden)
Not just Xbox controllers, ~all controllers.
Nintendo hides them really well from you but there’s a menu options to go look for updates. My two 8bitdo controllers get quite regular updates, they have their own update tool for it.