audioOS 9.9.18.4

audioOS

Version

9.9.18.4

Build ID

22L255

File Size

1.75 GB

Release Date

2025-03-31T17:29:31Z

Update Type

Normal release

Delta update - requires 15.2 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 2025-03-31T17:29:31Z. The update package is 1.75 GB. This is a delta (partial) update that requires 15.2 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 0b324e889fa83cf8739ccc406a00d85e569250d0.zip.

Direct URL

https://updates.cdn-apple.com/2025WinterFCS/patches/082-16146/8EC69927-7455-433C-A00F-A9F6BB7D2D7F/com_apple_MobileAsset_SoftwareUpdate/0b324e889fa83cf8739ccc406a00d85e569250d0.zip

Filename

0b324e889fa83cf8739ccc406a00d85e569250d0.zip

Other Devices

HomePod (Unknown Model)

AudioAccessory1,2

HomePod (2nd generation)

AudioAccessory6,1

HomePod mini

AudioAccessory5,1