audioOS 9.9.18.1 (build 22J580) is an official Apple over-the-air update for the HomePod mini, released on 2024-10-28T15:29:51Z. The update package is 1.68 GB. This is a delta (partial) update that requires 15.5.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 3c10b3581c922cbfd3863491cad7652133e0d961.zip.