audioOS 9.9.16.4.1 (build 20L498) is an official Apple over-the-air update for the HomePod mini, released on 2023-04-12T17:25:29Z. The update package is 650.42 MB. This is a delta (partial) update that requires 16.2 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 499fb6c96019f25d947058adad606314c194720f.zip.