For the iPhone, iMore reports, Apple has blocked signing in and sharing an iOS 15.1 version. You will not be able to install this version on your iPhone anymore and this is what it means for you. iOS 15.1.1 is the only option.
This is nothing new or surprising, Apple has a policy of maintaining its ecosystem to date, and the company stopped signing older iOS versions soon after launching a new one, to ensure that all iPhone users run the latest software on their devices. .
On the one hand, new iOS features include bug fixes, new features, performance enhancements, and security updates. A major bug fix of Apple rolled out with iOS 15.1 fixed issue where some users will experience sudden and unexpected calls. But on the other hand, if there are any issues or unstable performance during the upgrade to iOS 15.1.1 there is no way to switch to an older version right now.
IPhone users can also install iOS 15.2 beta if they are on the public beta system. Remember that if you install beta 15.2, you will be able to switch to 15.1.1 now. Also, running a beta software version on your iPhone device increases the risk of bugs and instability of the system. If you still want to fly on that train, here is how you can do it.
How to install iOS 15 beta beta
Start with a full iTunes backup of your data. Thankfully, you no longer need iTunes for that: simply connect your iPhone with your Mac via a cable and back it up with Finder, or alternatively you can back up your iPhone to iCloud. This is important because you almost always install beta software, so you may experience bugs.
Visit Apple’s beta software website with Safari and log in with your Apple ID.
Once logged in, you have to register your iPhone by downloading the beta version of iOS 15. To find, tap Records with the button at the top right, or use the drop down menu on the left.
Find the iOS 15 profile and make sure you play the recording.
Head to Settings> General> Software Update and then you should see the iOS 15 beta appear. Click the “Download and Install” button.
Updated iOS 15 beta
Before pulling the trigger on the upgrade, make sure to check the compatible devices (which Apple lists on its official website). You can successfully install iOS 15.2 beta on the following iPhones (and iPods):
iPhone 13 Pro Max iPhone 13 Pro iPhone 13 iPhone 13 Mini iPhone 12 Pro Max iPhone 12 Pro iPhone 12 iPhone 12 Mini iPhone 11 iPhone 11 Pro iPhone 11 Pro Max iPhone XS iPhone XS Max iPhone XR iPhone X iPhone 8 iPhone 8 Plus iPhone 7 iPhone 7 Plus iPhone 6S iPhone 6S Plus iPhone SE (first and second generation) iPod Touch (seventh generation)