audioOS 9.9.15.5 (build 19L570) is an official Apple over-the-air update for the HomePod mini, released on 2022-05-16T18:24:04Z. The update package is 1.18 GB. This is a delta (partial) update that requires 14.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: d56efb18c37e7a0710c4a58116408954d63fb370.zip.