audioOS 9.9.15.6 (build 19M65) is an official Apple over-the-air update for the HomePod mini, released on 2022-07-20T17:24:00Z. The update package is 509.22 MB. This is a delta (partial) update that requires 15.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 4d2ef956bbd1b2f6b40d311e4a6aa8d98175991f.zip.