audioOS 9.9.16.3.2 (build 20K672) is an official Apple over-the-air update for the HomePod (Unknown Model), released on 2023-02-13T18:18:02Z. The update package is 1.15 GB. This is a delta (partial) update that requires 15.4.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 73d6a353944efa3a9e8a6c1288f320c40dd7ee1a.zip.