audioOS 9.9.15.0

audioOS 9.9.15.0 (build 19J346) is an official Apple over-the-air update for the HomePod, released on 2021-09-20T17:12:06Z. The update package is 1.29 GB. This is a delta (partial) update that requires 13.4.8 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 e18e04114bc1fa6c18234b75bbe0a723cc54aee5.zip.