audioOS 9.9.15.1

audioOS 9.9.15.1 (build 19J572) is an official Apple over-the-air update for the HomePod (Unknown Model), released on 2021-10-25T17:12:26Z. The update package is 985.82 MB. This is a delta (partial) update that requires 14.5 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 4f9eeacc8874b5c3d22ba53fd0c866782ac336d6.zip.