audioOS 9.9.15.5 (build 19L570) is an official Apple over-the-air update for the HomePod mini, released on 2022-05-16T18:24:07Z. The update package is 182.42 MB. This is a delta (partial) update that requires 15.4.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: ad07a9129cd535795de982e6468c781001b1ac8d.zip.