audioOS 9.9.17.2 (build 21K365) is an official Apple over-the-air update for the HomePod, released on 2023-12-11T18:21:38Z. The update package is 376.69 MB. This is a delta (partial) update that requires 17.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 16bdbb0cc8c0c1e1b6f739883eb8e6a3dbfe6fb5.zip.