audioOS 9.9.15.0 (build 19J346) is an official Apple over-the-air update for the HomePod mini, released on 2021-09-20T17:12:13Z. The update package is 1.21 GB. This is a delta (partial) update that requires 14.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 5c2b1a4aebb6dee7b212c8cedcc019b4b65a70c7.zip.