audioOS 9.9.17.4 (build 21L227) is an official Apple over-the-air update for the HomePod mini, released on 2024-03-07T18:16:26Z. The update package is 1.77 GB. This is a delta (partial) update that requires 14.5 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 4ca57d6fa30bd517754bffc7b917b1c280490591.zip.