audioOS 9.9.17.3 (build 21K646) is an official Apple over-the-air update for the HomePod, released on 2024-01-22T18:29:29Z. The update package is 439.51 MB. 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: f577a14d5e5b405bd4719574b986b7da2c7ccf5a.zip.