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.
Popular Stories
In June 2022, Apple previewed the next generation of CarPlay, promising deeper integration with vehicle functions like A/C and FM radio, support for multiple displays across the dashboard, personalization options, and more.
Apple says the first vehicles with support for the next-generation CarPlay experience will be announced in late 2023, with committed automakers including Acura, Audi,...
Multiple rumors have suggested that the next-generation iPhone 15 models will adopt the Wi-Fi 6E standard that Apple has already introduced in the iPad Pro and MacBook Pro, and now a leaked document appears to confirm Apple's plans.
Sourced from researcher and Apple leaker Unknownz21 (@URedditor), the document features diagrams of the iPhone 15's antenna architecture. D8x refers to the...
Apple's next-generation iPhone 15 Pro and iPhone 15 Pro Max are expected to be announced in September as usual. Already, rumors suggest the devices will have at least eight exclusive features not available on the standard iPhone 15 and iPhone 15 Plus.
An overview of the eight features rumored to be exclusive to iPhone 15 Pro models:A17 chip: iPhone 15 Pro models will be equipped with an A17...
Following last week's hardware announcements, this week saw the actual release of several of the new products as well as operating system updates bringing new features and bug fixes across Apple's platforms.
This week also saw some fresh rumors about the iPhone 15 lineup and Apple's upcoming AR/VR headset, while we shared some tips to help you get the most of your macOS experience, so read...
Apple will launch a foldable iPad with a carbon fiber kickstand sometime next year, according to analyst Ming-Chi Kuo.
In a series of tweets, Kuo said he expects an "all-new design foldable iPad" to be the next big product launch in the iPad lineup, with no other major iPad releases in the next nine to 12 months. The analyst said he was "positive" that the foldable device would arrive in...
As we near the end of January, this week we saw a collection of deals on Apple's iPad Pro, iMac, and the 2021 MacBook Pro. Additionally, we're tracking new sales on TVs and memory accessories from Samsung.
Note: MacRumors is an affiliate partner with some of these vendors. When you click a link and make a purchase, we may receive a small payment, which helps us keep the site running.
Samsung...
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.