audioOS 9.9.15.1.1 (build 19J582) is an official Apple over-the-air update for the HomePod (Unknown Model), released on 2021-11-03T17:10:30Z. The update package is 1.91 GB. This is a full OTA update that can be applied from any compatible base version. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 09aa6e620cab14974bf22b425d3f201e2dc0fb1f.zip.