audioOS 9.9.18.2 (build 22K155) is an official Apple over-the-air update for the HomePod, released on 2024-12-11T18:25:54Z. The update package is 2.02 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: 35d8d6df11c523adca72c3de92b36fd4e135ed3a.zip.