audioOS 9.9.16.6 (build 20M73) is an official Apple over-the-air update for the HomePod, released on 2023-07-24T17:29:57Z. The update package is 1.52 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: 89953ab7b49c8a3ddab8aa3f46f48121e7aa42c8.zip.