audioOS 9.9.18.1 (build 22J580) is an official Apple over-the-air update for the HomePod, released on 2024-10-28T15:28:30Z. The update package is 1.91 GB. This is a delta (partial) update that requires 13.4.8 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: d5dbf515ec3ecdcceb6fb4809dd06bec03396a7f.zip.