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to stop signing an older version of iOS after releasing an update, and the process keeps iPhone users from installing outdated versions of iOS.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
Apple's recently announced CarPlay Ultra promises a deeply integrated in-car experience, but not all iPhone users will be able to take advantage of the new feature.
According to Apple's press release, CarPlay Ultra requires an iPhone 12 or later running iOS 18.5 or later. This means if you're using an iPhone 11, iPhone XR, or any older model, you'll need to upgrade your device to access...
Apple today announced that its next-generation CarPlay experience, now dubbed "CarPlay Ultra" begins rolling out today, starting with Aston Martin vehicles.
Subscribe to the MacRumors YouTube channel for more videos.
CarPlay Ultra is now available with new Aston Martin vehicle orders in the U.S. and Canada. It will also be available for existing models that feature the brand's next-generation ...
Apple today announced the launch of CarPlay Ultra, the long-awaited next-generation version of its CarPlay software system for vehicles.
CarPlay Ultra features deep integration with a vehicle's instrument cluster and systems, built-in Radio and Climate apps, customizable widgets, and more. The interface is tailored to each vehicle model and automaker's identity, and drivers can also adjust...
Apple's Vision Pro headset has left many early adopters expressing dissatisfaction over its weight, limited use cases, and sparse software ecosystem, according to a new article from The Wall Street Journal.
In the year following the device's launch, user feedback suggests that it has failed to meet expectations for comfort, software support, and social acceptance. In interviews conducted by T...
The upcoming all-new ultra-thin iPhone 17 Air could become the first Apple smartphone to adopt advanced battery technology, with Japanese supplier TDK preparing to ship its new generation of silicon-anode batteries by the end of June.
According to DigiTimes, TDK CEO Noboru Saito revealed in a recent interview that the Apple supplier has accelerated its production timeline, moving shipments...
Apple is expected to launch an all-new ultra-thin iPhone 17 Air later this year, and while there have been plenty of rumors about the camera's overall design and thinness, we haven't heard any details about the device's weight and battery capacity until now.
According to the leaker going by the account name "yeux1122" on the Korean-langauge Naver blog, the 6.6-inch iPhone 17 Air has a weight ...
