audioOS 9.9.18.5 (build 22L572) is an official Apple over-the-air update for the HomePod, released on 2025-05-12T17:13:25Z. The update package is 1.27 GB. This is a delta (partial) update that requires 17.0 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: c20003b34a7a42e663a2758bca773b34d9f84ddf.zip.