audioOS 9.9.18.5 (build 22L572) is an official Apple over-the-air update for the HomePod mini, released on 2025-05-12T17:13:40Z. The update package is 382.83 MB. This is a delta (partial) update that requires 18.4.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 24cb8486c6d2f37211239117739bd428088554ba.zip.