audioOS 9.9.16.1 (build 20K71) is an official Apple over-the-air update for the HomePod (Unknown Model), released on 2022-10-24T17:16:57Z. The update package is 1.4 GB. This is a delta (partial) update that requires 14.4 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 38be2295c14bc73908ecd50519352fe50a2690e4.zip.