audioOS 9.9.18.5 (build 22L572) is an official Apple over-the-air update for the HomePod, released on 2025-05-12T17:13:22Z. The update package is 1.44 GB. 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: 95659dea331714d6cdd8ad651d9a2e7cb710dc6a.zip.