audioOS 9.9.18.4

audioOS

Version

9.9.18.4

Build ID

22L255

File Size

1.97 GB

Release Date

2025-03-31T17:29:29Z

Update Type

Normal release

Delta update - requires 14.3 installed first.

Download OTA

Looking for beta firmware? View beta builds for HomePod →

About This Update

audioOS 9.9.18.4 (build 22L255) is an official Apple over-the-air update for the HomePod, released on 2025-03-31T17:29:29Z. The update package is 1.97 GB. This is a delta (partial) update that requires 14.3 to already be installed on the device - it cannot be applied from scratch. This update is no longer signed by Apple, meaning it can no longer be downloaded and applied on-device through Settings.

The OTA payload file is 774f6a7f8fbde1b16c437ff5a2803732d0efcd0a.zip.

Direct URL

https://updates.cdn-apple.com/2025WinterFCS/patches/082-16158/CBC38866-B811-4380-9E19-5FE5294482CF/com_apple_MobileAsset_SoftwareUpdate/774f6a7f8fbde1b16c437ff5a2803732d0efcd0a.zip

Filename

774f6a7f8fbde1b16c437ff5a2803732d0efcd0a.zip

Other Devices

HomePod (Unknown Model)

AudioAccessory1,2

HomePod (2nd generation)

AudioAccessory6,1

HomePod mini

AudioAccessory5,1