audioOS 9.9.16.5 (build 20L563) is an official Apple over-the-air update for the HomePod, released on 2023-05-18T17:11:48Z. The update package is 695.69 MB. This is a delta (partial) update that requires 16.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 286bf69a37a638a11212eab9c3e2a3f9e085dcfc.zip.