audioOS 9.9.18.6 (build 22M84) is an official Apple over-the-air update for the HomePod mini, released on 2025-07-29T17:28:00Z. The update package is 408.69 MB. This is a delta (partial) update that requires 18.4 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 106e815cf527ed9c75a988c3d1300e034dfbc556.zip.