The second-generation Apple AirPods have been running 2D15 firmware, whereas, the AirPods Pro has been running 2D27 firmware. Apple is now pushing a new firmware update to both these wireless earbuds.
The new firmware for the 2nd-gen AirPods and the AirPods Pro comes bearing the build number 3A283. Apple doesn’t provide a changelog for firmware updates of AirPods. So, there is no information at the moment regarding the changes the new firmware brings. However, it is being reported that the firmware update brings automatic device switching along with spatial audio to the AirPods Pro.
So, how can you update your AirPods to the new firmware? Well, there is no particular way to check for new firmware for AirPods. Any new firmware is downloaded and installed on AirPods automatically without user intervention. However, putting AirPods in their case, plugging the case to a power source, and then connecting AirPods to an iOS device is said to be a way to force AirPods to check for updates and install new firmware.
And how would you know if the update has been installed? It is simple. Connect your AirPods to your iOS device, open Settings, and navigate to General > About > AirPods, and the screen will show you the firmware version of your AirPods.