audioOS 9.9.15.4.1 (build 19L6452) is an official Apple over-the-air update for the HomePod mini, released on 2022-03-31T17:15:54Z. The update package is 1.93 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: ecf39a032a3d25fbc138929b501802bee36bd076.zip.