audioOS 9.9.18.4

audioOS

Version

9.9.18.4

Build ID

22L255

File Size

993.77 MB

Release Date

2025-03-31T17:29:38Z

Update Type

Normal release

Delta update - requires 18.1 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 2025-03-31T17:29:38Z. The update package is 993.77 MB. This is a delta (partial) update that requires 18.1 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 20824b0c5e60be32f93293ef22ea5ed7be191277.zip.

Direct URL

https://updates.cdn-apple.com/2025WinterFCS/patches/082-16219/9BE3264A-FBE6-451B-9691-BB34E03B54C2/com_apple_MobileAsset_SoftwareUpdate/20824b0c5e60be32f93293ef22ea5ed7be191277.zip

Filename

20824b0c5e60be32f93293ef22ea5ed7be191277.zip

Other Devices

HomePod (Unknown Model)

AudioAccessory1,2

HomePod (2nd generation)

AudioAccessory6,1

HomePod mini

AudioAccessory5,1