Apple Stops Signing iOS 15.4.1 Following iOS 15.5 Release, Downgrading No Longer Possible
Following the May 16 launch of iOS 15.5, Apple has stopped signing iOS 15.4.1, the previously available version of iOS that came out in late March. Because iOS 15.4.1 is no longer being signed, it is not possible to downgrade to that version of iOS after installing iOS 15.5.

Apple routinely stops signing older versions of software updates after new releases come out in order to encourage customers to keep their operating systems up to date, so it is not unusual that iOS 15.4.1 is no longer being signed.
iOS 15.4.1 was a minor update that addressed an issue that could cause the iPhone's battery to drain more quickly following the iOS 15.4 launch. It also addressed an AppleAVD issue that could allow an application to execute arbitrary code with kernel privileges, which Apple said was actively exploited.
iOS 15.5 added an Apple Cash feature for requesting and sending money, along with new features for Podcasts and a fix for an issue with home automations. It also included several security updates, and those who have not already upgraded to iOS 15.5 should do so for that reason.
Related Stories
Following the March 31 release of iOS 15.4.1, Apple has stopped signing iOS 15.4, the previously available version of iOS that came out earlier in March. As iOS 15.4 is no longer being signed, it is not possible to downgrade to that version of iOS once you've installed iOS 15.4.1.
Apple routinely stops signing older versions of software updates after new releases come out in order to...
Following the release of iOS 15.4 on March 14, Apple has stopped signing iOS 15.3.1, the previously available version of iOS that came out in February. As iOS 15.3.1 is no longer being signed, it is not possible to downgrade to that version of iOS if you've updated to iOS 15.4.
Apple routinely stops signing older versions of software updates after new releases come out in order to encourage...
Following the release of iOS 15.3.1 on February 10, Apple has stopped signing iOS 15.3, the previously available version of iOS that came out in late January. Because iOS 15.3 is no longer being signed, it is not possible to downgrade to that version of iOS if you've updated to iOS 15.3.1.
Apple routinely stops signing older versions of software updates after new releases come out in order...
Following the release of iOS 15.2.1 earlier in January, Apple has stopped signing iOS 15.2, the previously available version of iOS that saw a public release on December 13. With iOS 15.2 no longer being signed, it is not possible to downgrade to that version if you've already updated to iOS 15.2.1.
Apple routinely stops signing older versions of software updates after new releases come out...
Following the release of iOS 15.0.1 on October 1, Apple has stopped signing iOS 15.0, the previously available version of iOS that saw a public release on September 20. With iOS 15.0 no longer being signed, it is not possible to downgrade to that version if you've already updated to iOS 15.0.1.
Apple last week stopped signing iOS 14.8 as well, which means iOS 15.0.1 is the only publicly...
Following the release of iOS 14.7.1 last week, Apple has stopped signing iOS 14.7, the previously available version of iOS that was released earlier in July. With iOS 14.7 no longer being signed, it is not possible to downgrade to iOS 14.7 if you've already installed iOS 14.7.1.
Apple routinely stops signing older versions of software updates after new releases come out in order to encourage ...
Following the release of iOS 14.7 last week, Apple has stopped signing iOS 14.6, the previously available version of iOS that was released in May. With iOS 14.6 no longer being signed, it is not possible to downgrade to iOS 14.6 if you've already installed iOS 14.7 or iOS 14.7.1.
Apple routinely stops signing older versions of software updates after new releases come out in order to...
Apple is encouraging people who are still running iOS 14 to update to iOS 15, a reversal of an earlier policy that saw the company allowing iOS 14 users to choose not to install the iOS 15 update.
When iOS 15 launched, Apple said that iOS offered a "choice between two software update versions," pledging to offer security updates for those who opted to stick with iOS 14.iOS now offers a...
Popular Stories
Apple today launched its annual "Back to School" promotion for college/university students in the United States and Canada. This year's promotion offers a free Apple gift card with the purchase of an eligible Mac or iPad, rather than free AirPods like last year. Apple is also offering students 20% off AppleCare+ plans during the promotion.
Apple is offering a $150 gift card with the purchase ...
iPhone 14 Pro models are widely expected to feature always-on displays that allow users to view glanceable information without having to tap to wake the screen. In the latest edition of his Power On newsletter for Bloomberg, Mark Gurman said the feature will include support for iOS 16's new Lock screen widgets for weather, fitness, and more.
"Like the Apple Watch, the iPhone 14 Pro will be...
In the latest edition of his Power On newsletter for Bloomberg, Mark Gurman outlined additional M2 Macs on Apple's product roadmap, including new Mac mini models with M2 and M2 Pro chips, new 14-inch and 16-inch MacBook Pro models with M2 Pro and M2 Max chips, and a new Mac Pro tower with M2 Ultra and "M2 Extreme" chips.
Following the M2 series of Macs, Gurman said the first M3 series of...
Following the launch of Apple's new 13-inch MacBook Pro with the M2 chip, it has been discovered that the $1,299 base model with 256GB of storage has significantly slower SSD read/write speeds compared to the equivalent previous-generation model.
YouTube channels such as Max Tech and Created Tech tested the 256GB model with Blackmagic's Disk Speed Test app and found that the SSD's read and...
TSMC will manufacture Apple's upcoming "M2 Pro" and "M3" chips based on its 3nm process, according to Taiwanese industry publication DigiTimes.
"Apple reportedly has booked TSMC capacity for its upcoming 3nm M3 and M2 Pro processors," said DigiTimes, in a report focused on competition between chipmakers like TSMC and Samsung to secure 3nm chip orders. As expected, the report said TSMC will...
The next-generation AirPods Pro could come with a long list of new features that include heart rate detection, the ability to function as a hearing aid, and a USB-C port according to a report from 52Audio.
The site claims that it has received new information on the AirPods Pro 2, and it has used that information to provide some renders on what the earbuds might look like. Design wise, there...
Polish developer Michał Gapiński has released a new and improved version of his "Tesla Android Project" which brings Apple's CarPlay experience to more Tesla vehicles than ever before.
According to Gapiński, version 2022.25.1 provides "100% functional CarPlay integration for any Tesla," and comes with several new features and bug fixes.
The project now supports DRM video playback so that...
Top Rated Comments
How did they force you to upgrade? Turn off auto-updates and it won’t do that (hey, I’ve got it turned on and even so, I haven’t been prompted for 15.5).
Sure, eventually those older systems are incompatible, but they’re not forcing anyone to upgrade that I’m aware of.