audioOS 9.9.16.4.1 (build 20L498) is an official Apple over-the-air update for the HomePod, released on 2023-04-12T17:25:11Z. The update package is 1.43 GB. This is a delta (partial) update that requires 14.5 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 1d630be92d5c6d022023f938bc2340f49d7bb7ad.zip.