audioOS 9.9.18.6 (build 22M84) is an official Apple over-the-air update for the HomePod mini, released on 2025-07-29T17:28:01Z. The update package is 313.6 MB. This is a delta (partial) update that requires 18.5 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: f71990b3202615bab25cb425242dc15750f9950b.zip.