audioOS 9.9.16.3 (build 20K649) is an official Apple over-the-air update for the HomePod mini, released on 2023-01-24T18:08:18Z. The update package is 1.15 GB. This is a delta (partial) update that requires 15.4.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: fa86317f59a3afae9535fa97185b7f57b61fca9f.zip.