audioOS 9.9.14.4 (build 18K802) is an official Apple over-the-air update for the HomePod (Unknown Model), released on 2021-01-26T18:33:05Z. The update package is 771.11 MB. This is a delta (partial) update that requires 13.4 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 8c8446a6dcb931f3b3a26007ccd2f79813596228.zip.