audioOS 9.9.18.1 (build 22J580) is an official Apple over-the-air update for the HomePod, released on 2024-10-28T15:29:31Z. The update package is 40.6 MB. This is a delta (partial) update that requires 18.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: deb06f59a78bc002bfeffeeaf68fa6d42be02082.zip.