audioOS 9.9.16.6 (build 20M73) is an official Apple over-the-air update for the HomePod, released on 2023-07-24T17:29:58Z. The update package is 1.43 GB. This is a delta (partial) update that requires 14.6 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 9d178d920bc5b62c7d8b8668361067c4ac69d0ec.zip.