audioOS 9.9.16.0 (build 20J373) is an official Apple over-the-air update for the HomePod mini, released on 2022-09-12T17:06:40Z. The update package is 1.03 GB. This is a delta (partial) update that requires 15.4 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 9cd9368f27d15a475b71be53c08514baa355dfb7.zip.