audioOS 9.9.17.4 (build 21L227) is an official Apple over-the-air update for the HomePod mini, released on 2024-03-07T18:16:29Z. The update package is 1.23 GB. This is a delta (partial) update that requires 16.3.2 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: fcb8103ce433b5c13077a8dea2cf1f9b7bdc5ff3.zip.