audioOS 9.9.16.3 (build 20K649) is an official Apple over-the-air update for the HomePod, released on 2023-01-24T18:07:56Z. The update package is 266.85 MB. This is a delta (partial) update that requires 16.2 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 637c4951e144e61fc5e2d97eb359ee2a428e329e.zip.