audioOS 9.9.15.1.1 (build 19J582) is an official Apple over-the-air update for the HomePod mini, released on 2021-11-03T17:10:31Z. The update package is 1.12 GB. This is a delta (partial) update that requires 14.3 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 4237b484b87e35735c9dc866be7ed4f178171c8b.zip.