audioOS 9.9.17.2 (build 21K365) is an official Apple over-the-air update for the HomePod, released on 2023-12-11T18:21:38Z. The update package is 1.12 GB. This is a delta (partial) update that requires 16.5 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 01457577d3faefbd9e95cdd6bdaf07654d01759d.zip.