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 15.5.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 21c4df94d4dc054f2dd9888c5fadf5ac6b10853b.zip.