audioOS 9.9.16.3.2 (build 20K672) is an official Apple over-the-air update for the HomePod, released on 2023-02-13T18:17:49Z. The update package is 1.17 GB. This is a delta (partial) update that requires 15.1.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 71f8587e294773c6bc00805d6612e9a13fbcb75e.zip.