audioOS 9.9.16.3.2 (build 20K672) is an official Apple over-the-air update for the HomePod, released on 2023-02-13T18:17:53Z. The update package is 72.98 MB. This is a delta (partial) update that requires 16.3 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: e51055b8a67f599edbc389e08442219e3c412672.zip.