audioOS 9.9.17.2 (build 21K365) is an official Apple over-the-air update for the HomePod mini, released on 2023-12-11T18:21:41Z. The update package is 1.55 GB. This is a delta (partial) update that requires 15.4 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: dd63a7dd45f941605ecc7e5f20d1005e6568b7c3.zip.