audioOS 9.9.16.3 (build 20K649) is an official Apple over-the-air update for the HomePod mini, released on 2023-01-24T18:08:21Z. The update package is 277.61 MB. This is a delta (partial) update that requires 16.2.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 9b61fc40d206c4c18f3db9a0839049074dcd0326.zip.