audioOS 9.9.15.6 (build 19M65) is an official Apple over-the-air update for the HomePod mini, released on 2022-07-20T17:24:02Z. The update package is 189.07 MB. This is a delta (partial) update that requires 15.5 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 570137e3eb642fc4302a880f1e461e8ef103b270.zip.