audioOS 9.9.13.4.6 (build 17L6570) is an official Apple over-the-air update for the HomePod, released on 2020-06-01T17:26:45Z. The update package is 1.52 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: 442f0b01b96bad011e85b41bade4d03a9c03920e.zip.