audioOS 9.9.15.3 (build 19K547) is an official Apple over-the-air update for the HomePod, released on 2022-01-26T18:16:46Z. The update package is 961.83 MB. This is a delta (partial) update that requires 14.6 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: a7a4db345bb2ae27d326408a20aacb523a82f0cf.zip.