Apple today introduced a new firmware update for the third-generation AirPods. The new firmware is version 6A321, up from the 6A317 firmware introduced in December.
Apple's AirPods firmware updates often do not come with details on new features, so it is unclear what might be included in the software.
Apple also does not offer instructions on how to upgrade AirPods software, but firmware is generally installed over-the-air while the AirPods are connected to an iOS device. Putting the AirPods in the case, connecting the AirPods to a power source, and then pairing the AirPods to an iOS device or Mac should force the update.
You can check your AirPods or AirPods Pro firmware by following these steps:
If we learn more about what's new in the AirPods firmware release, we'll update this article.
Source: Macrumors