audioOS 9.9.15.2

audioOS 9.9.15.2 (build 19K52) is an official Apple over-the-air update for the HomePod, released on 2021-12-13T18:28:19Z. The update package is 1.14 GB. This is a delta (partial) update that requires 14.2.1 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 dc7edeff64d4f9c5dc3fcd359b56386d4ad7812f.zip.