audioOS 9.9.17.6

audioOS 9.9.17.6 (build 21M71) is an official Apple over-the-air update for the HomePod (2nd generation), released on 2024-07-29T20:28:09Z. The update package is 1.19 GB. This is a delta (partial) update that requires 16.4 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 450bb34d8bcbe1f462156f4d8951f010de3ce23c.zip.