Apple is rolling out a new version of its AirTags firmware. The refreshed firmware has a build number of 2A36, up from 2A24e. While there is no way to force your AirTag to update its firmware, there is a way to see if it has been updated to the latest version.
When you install the update, you will see a 2.0.36 version number. Apple hasn’t announced what’s included in the update, but the Cupertino firm may eventually provide a support document with details.
AirTag firmware updates install automatically when an AirTag is in range of your iPhone. The process is similar to how Apple updates the firmware of its AirPods lineup.
Checking your AirTag firmware version is a bit roundabout.
If your AirTag has not yet been updated, be patient. Just make sure your AirTag is in range of your iPhone and it will automatically update when the time comes.