audioOS 9.9.15.2

audioOS 9.9.15.2 (build 19K52) is an official Apple over-the-air update for the HomePod (Unknown Model), released on 2021-12-13T18:28:28Z. The update package is 310.26 MB. This is a delta (partial) update that requires 15.1.1 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 7f191546dda43b1d843df830517fdfa279b7157f.zip.