audioOS 9.9.15.0

audioOS 9.9.15.0 (build 19J346) is an official Apple over-the-air update for the HomePod (Unknown Model), released on 2021-09-20T17:12:11Z. The update package is 1.19 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 fa079109a719a8fc3cae25a6c6781ffcce02b096.zip.