audioOS 9.9.18.4

audioOS

Version

9.9.18.4

Build ID

22L255

File Size

1 GB

Release Date

2025-03-31T17:29:50Z

Update Type

Normal release

Delta update - requires 18.0 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 2025-03-31T17:29:50Z. The update package is 1 GB. This is a delta (partial) update that requires 18.0 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 90ca9406404acefab6fbcb2cb7ee16a36e1ad009acb81f541d711307448986dc.aea.

Direct URL

https://updates.cdn-apple.com/2025WinterFCS/mobileassets/082-16057/CFBB7156-A0CA-4351-B97E-EF0CE14CA2D9/com_apple_MobileAsset_SoftwareUpdate/90ca9406404acefab6fbcb2cb7ee16a36e1ad009acb81f541d711307448986dc.aea

Filename

90ca9406404acefab6fbcb2cb7ee16a36e1ad009acb81f541d711307448986dc.aea

Other Devices

HomePod (Unknown Model)