Apple pushed a firmware update for AirPods Pro on Thursday. It’s unclear what the firmware update does, and the update process is automatic. But, users are reporting their firmware version number went from 2B584 to 2B588. AirPods Pro were released on October 20th.
As noted, the update process is automatic, meaning you have little control over it. These are the steps you can take to check on your AirPods Pro firmware version.
Open the Settings app of your iPhone or iPad (iPod touch works, too). Go to General > About. Open your AirPods Pro case. When you do so, you’ll see a tab appear for your AirPods Pro. Tap that tab and look for your Firmware Version.
The old firmware version number is 2B584. Once it updates, it will be 2B588. I haven’t figured out a way to force the update,