audioOS 9.9.18.4

audioOS

Version

9.9.18.4

Build ID

22L255

File Size

1.47 GB

Release Date

2025-03-31T17:29:46Z

Update Type

Normal release

Delta update - requires 16.3.1 installed first.

Download OTA

Looking for beta firmware? View beta builds for HomePod (2nd generation) →

About This Update

audioOS 9.9.18.4 (build 22L255) is an official Apple over-the-air update for the HomePod (2nd generation), released on 2025-03-31T17:29:46Z. The update package is 1.47 GB. This is a delta (partial) update that requires 16.3.1 to already be installed on the device - it cannot be applied from scratch. This update is currently signed by Apple, so it can be applied directly from Settings › General › Software Update.

The OTA payload file is f3ce4d72b93e907d594e3e6c601abf6a495b08d1480a383b690bef91ecdde112.aea.

Direct URL

https://updates.cdn-apple.com/2025WinterFCS/mobileassets/082-16267/1758E18A-9D7A-4525-89AE-C1B47F2513E8/com_apple_MobileAsset_SoftwareUpdate/f3ce4d72b93e907d594e3e6c601abf6a495b08d1480a383b690bef91ecdde112.aea

Filename

f3ce4d72b93e907d594e3e6c601abf6a495b08d1480a383b690bef91ecdde112.aea

Other Devices

HomePod (Unknown Model)

AudioAccessory1,2