Apple Stops Signing iOS 18.4
Apple is no longer signing iOS 18.4, a little over a week after releasing the iOS 18.4.1 update. Since iOS 18.4 is not signed anymore, iPhone users who have upgraded to iOS 18.4.1 are not able to downgrade to iOS 18.4.
It is not unusual for Apple to stop signing an older version of iOS after releasing an update, and the process keeps iPhone users from installing outdated versions of iOS. "Signing" refers to a server-side verification check that's done when versions of iOS are downloaded onto an iPhone. Only software that passes the verification check is able to be installed.
Preventing downgrading ensures that customers have the latest security improvements and are not vulnerable to known attacks or security holes.
The iOS 18.4.1 update addresses an issue with wireless CarPlay and fixes several security updates, including one known to be actively exploited, so it is a good idea to install the software if you have not done so already.
Popular Stories
With just three days to go until the iPhone Duo is released, Apple is getting ready for the launch. Behind the scenes, the App Store now has screenshots of Apple's built-in apps running on the Duo. We've seen some apps in marketing materials, but images of the ones we haven't seen give us an idea of what it will be like using the iPhone Duo day to day.
Many apps are shown in landscape...
Apple has temporarily removed Keynote, Pages, and Numbers from the App Store, just after releasing an update that added iPhone Duo support and a new Intelligent Assistant.
It is not clear if the apps were removed intentionally, or if it is a bug. Apple has not said when the apps will be reinstated, but if it was in error, they should return soon.
Update: The Mac versions are back without...
Apple today sent out invites for an experience in Los Angeles on Wednesday, October 28, and the "Pro and tell" tagline on the invitation likely means that the rumored MacBook models with touch-enabled OLED displays will stick with MacBook Pro branding instead of the once-rumored "MacBook Ultra" name.
The long-rumored "iPhone Ultra" ended up being named iPhone Duo, so speculation that Apple...
![Apple Pulls Keynote, Pages and Numbers From App Store [Update: Back]](https://images.macrumors.com/t/Okb7kitB_gNr6qe5Pex9nQIysD8=/112x112/article-new/2026/01/Apple-Creator-Studio-iWork-suite.jpg)
