audioOS 9.9.16.3.1 (build 20K661) is an official Apple over-the-air update for the HomePod, released on 2023-02-06T18:19:47Z. The update package is 1.49 GB. This is a delta (partial) update that requires 14.2.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 6481806597a7ad398cabc8e4378fc3d713c5b395.zip.