audioOS 9.9.16.4.1 (build 20L498) is an official Apple over-the-air update for the HomePod, released on 2023-04-12T17:25:10Z. The update package is 1.53 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: e4ca6459fca0c6a4761d72c8a7b61e9f66e2df3d.zip.