audioOS 9.9.17.1.1 (build 21K82) is an official Apple over-the-air update for the HomePod, released on 2023-11-07T21:40:00Z. The update package is 1.51 GB. This is a delta (partial) update that requires 15.4 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: a8a0b2acfc8b88d63eba61b06a19b89549d62d4f.zip.