audioOS 9.9.17.4

audioOS 9.9.17.4 (build 21L227) is an official Apple over-the-air update for the HomePod mini, released on 2024-03-07T18:16:28Z. The update package is 1.59 GB. This is a delta (partial) update that requires 15.4.1 to already be installed on the device - it cannot be applied from scratch. This update is no longer signed by Apple, meaning it can no longer be downloaded and applied on-device through Settings.

The OTA payload file is 9b75c0141009f782030ef7b035b9638c04a95dfd.zip.