I can't update my iPhone to iOS 15

Hello~ You should be able to update to iOS 16 . Click on below…

Update your iPhone or iPad - Apple Support

If you are having issues…

If your iPhone or iPad won't update - Apple Support

What happens when you try? Are you running beta or a VPN? Post back if needed.

~Katana-San~

leang278 Said:

"Idk: why Can’t I update iOS 15"

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Updating an iPhone X to iOS 15:

A. You can't.  The iPhone will only install to iOS 12.5.7. See here: Update your iPhone or iPad Software if you're Experiencing Issues with Location, Date, and Time - Apple Support. And, for the note, even if you could update, only the latest version will install: iOS 17.1 (as of this reply).

So, what to try...

B. Update Using a Computer:

Have a Computer Handy? If so, try using a computer to update. Go here: Update your iPhone Using a Computer - User Tip. If any updates are availabe, they will install, sure enough.

My iPhone won’t update, what could be the problem? If you are asking this question, it is paramount to highlight why iPhone won’t update 15. Here are the most commons reasons for iOS won’t update.

• Incompatibility with iOS 15.7: For anyone using an old iPhone, your device may not be compatible with the latest version of the operating system. Notably, iOS 15.7 will be compatible with the following devices:

• Note: iOS 16 is compatible with iPhone 8 and newer iPhones. And iOS 17 is compatible with iPhone XR and later iPhones.

• Insufficient Storage Space: Normally, iOS 15.7 requires over 2 GB of storage space. However, you are required to have around 5 GB of free space on your iPhone before you can download and install iOS 15.7. So, if iOS 15.7 won’t update on your device, it could because of insufficient storage space.

• Poor WiFi Connection: A good Wi-Fi connection is required to update iOS 15.7 on your iPhone. Therefore, if the iPhone update won’t install, you should note that poor Wi-Fi connection could be the problem. You may want to check your internet connection before you start downloading the update.

• Low battery: It is important to note that iPhone won’t download update if your battery is low. Therefore, make sure that your battery is at least 50% before you start updating to iOS 15.7

• Corrupted Files and Bugs: Lastly, you may not be able to update to iOS 15.7 because of some corrupted files and bugs. These files and bugs will be interfering with your update; hence, the iOS update won’t install on your device.

Part 2. 5 Quick Tricks to Fix An iPhone Won’t Download Update iOS 16/15.7

My iPhone won’t let me update to iOS 15.7/16/17, what can I do? You don’t have to get worked up over this problem as we offer you 5 trusted tricks to fix it.

1. Charge your iPhone When iOS Won’t Update

If your iPhone won’t update because of the low battery, this solution is for you. All you have to do is just connect your iPhone to a charger. Make sure your battery is charged to at least 50% before you start updating to iOS 15.7

2. Free up Space on iPhone that iOS Update Won’t Install

As stated earlier, you need around 5 GB of storage space to install iOS 15.7 on your iPhone. Therefore, you should consider freeing up some space on your device. To free up space, here are the things you should do:

• Go to the “Settings” app on your device.

• Navigate to “General” and then “Storage & iCloud Usage”.

• Then, click “Manage Storage”. You will see the list of the music, videos, podcasts, and other files on your device. Delete as many as you want to free up space on your iPhone.

Second part:

3. Force Restart iPhone

If your iPhone won’t update 15, force restarting it may solve the problem. You should understand that different models of iPhone use varying methods to force restart. So, you should check your iPhone model to find the right method to force restart it.

iPhone 8 and later

You have to press the “Volume Up” button and release it quickly. Press the “Volume Down” button and release it quickly. Lastly, you should press and hold the side button; release it once the Apple logo shows on your screen.

iPhone 7 Series

Press and hold the “Volume Down” and “Sleep/Wake” buttons simultaneously. Release the buttons when the Apple logo shows on your screen.

iPhone 6s or iPhone SE

Press and hold the “Sleep/Wake” and “Home” buttons simultaneously. Release the two buttons when the Apple logo appears on the screen.

4. Update iOS 15.7 through iTunes

Another method you can explore to update iOS 15.7 is via iTunes. Follow the steps below:

With a USB cable, plug your device into a Windows PC or Mac. Afterwards, launch iTunes on the computer.

Look at the top of the screen and tap “iPhone” under the “Device” option.

Tap “Check for Update”. Then, hit “Download and Update” to install the latest iOS update on your device. 

[Edited by Moderator]