audioOS 9.9.15.6 (build 19M65) is an official Apple over-the-air update for the HomePod mini, released on 2022-07-20T17:24:01Z. The update package is 458.3 MB. This is a delta (partial) update that requires 15.3 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 0fd94134e32ca13189f60340c1175f34d2dd350d.zip.