By Dylan / Last Updated July 1, 2021

iOS 15 won’t install

Why won’t my iPhone update to iOS 15. After downloading the firmware from ipsw.me, I can’t install it on my iPhone 11. If I tap Download and Install in Software Update, nothing happens. How should I install iOS 15 now?

- Question from Apple Community

iOS 15 public beta has been released in July and many users update updates iPhone immediately. Most of users think the new iOS safe and stable, but some users report that there are still many bugs like Bluetooth problem, cellular problems, or broken apps, so that you’d better wait for the official iOS 15.

Update to iOS 14

The installation of the beta might fail for some reasons like iOS stuck on verifying update or not able to contact the server. If you want to enjoy a newer iOS version and encounter the problem of can't update iOS, follow the steps below to fix the iOS won't install issue.

Why can’t download and update iOS 15,14 on iPhone?

The first thing you should know the compatibility of the iOS version you want to update. For example, iOS 15 and iOS 14 are compatible with the iPhone 6s to the latest iPhone 12, Second-generation SE, so if you use iPhone 5s or iPhone 6, you cannot install iOS 15 beta on it.

If you can’t download iOS, it might be caused by the iPhone is not able to visit the update server, you need to check the Internet connection.

This update needs to download a package of about 5GB, so you will need to make sure there is enough space for the installation, of course, and other programs and apps.

Apart from the two reasons, this problem might be caused by server errors or iPhone errors. The following section will tell you the ways to fix every error.

How to fix iOS 15,14 won’t install on iPhone issues?

You could use the following solutions to fix the failed iOS installation. To make sure your important data would not be wrongly deleted, you need to move to the next section to backup iPhone to computer.

#1 Reset network settings: You have known that Internet conditions are very important when installing iOS. Without stable internet, you can’t get the full package from Apple’s server, so connect iPhone to a fast and secure Wi-Fi and then try installing the new iOS again.

You could also reset network settings on iPhone to reset all the Internet services on iPhone:

Go to iPhone "Settings" > "General" > "Reset" > "Reset Network Settings".

Reset Network Setting

#2 Reset all the iPhone settings: Your settings do not only come from your will. Sometimes the apps would ask permission to change iPhone settings and you tap Allow so that there might be the wrong settings that could stop iOS 15 or iOS 14 installation.

Before you reset the settings, you need to remember your necessary customized settings like Wi-Fi passwords.

Go to iPhone "Settings" > "General" > "Reset" > "Reset All Settings".

#3 Remove the latest update: If you have downloaded an official iOS update before you get the iOS 14 beta profile, you cannot install iOS 15, 14, so you need to remove the update.

Go to iPhone "Settings" > "General" > "iPhone Storage" to find the update and delete it.

iPhone Storage

#4 Export iPhone data to have available space: You need to check iPhone storage status before you download the full iOS package.

Go to iPhone "Settings" > "General" > "iPhone Storage".

You could see the status of iPhone storage and how much storage every app has taken. If the storage is not enough to save and install the package, you could clear app data or uninstall some apps.

There might be a lot of photos and movies on your computer and they could take most of the storage. To safely delete iPhone data, you could go to the next part of this passage to export the large files to computer so you don’t need to modify other apps.

#5 Force restart iPhone: If the internet and iPhone storage are OK, you need to fix iPhone system glitches. It is common to see bugs on smartphones. To fix this problem, you could have a very effective way.

Hard reset on iPhone will help completely refresh the system to fix all the system glitches.

  • iPhone 8 or later: Press the volume+ button and then quickly release. Press the volume- button and then quickly release. Press the power button for seconds and wait for the Apple logo to appear.

  • iPhone 7 and iPhone 7 Plus: Press both the power button and volume- button for seconds and wait for the Apple logo appearing.

  • iPhone 6s or earlier: Press both the power button and the Home button for seconds and wait for the Apple logo appearing.

  • Restart iPhone

#6 Check iOS system status: Except the errors on iPhone, this problem could be caused by the errors of Apple server. Maybe it is visited by too many users at the same time, or the engineers have closed this service. You can wait for several hours or go to Apple System Status to check the service.

Quickly backup iPhone to prevent data loss before iOS installation

When you update or install a new iOS, it may cause data loss because of an unexpected issue, such as iPhone frozen during update. So we strongly recommend to you backup your iPhone data before install iOS. Here, we recommend AOMEI MBackupper, which is a free professional iPhone backup software. You could use it to quickly backup photos, videos, music, contacts, and messages to the computer in 3 steps.

Download AIMEI MBackupper, connect iPhone to computer with a USB cable, and get ready to backup your iPhone:

Step 1. Select Custom Backup to save all the five kinds of iPhone data.

Custom Backup iPhone

Step 2. Click the icon to select related iPhone data and click OK.

Select iPhone Data

Step 3. Click Start Backup and finish the task.

Click Start Backup

Conclusion

Many errors could stop you from installing the latest iPhone system. Hope the above 6 solutions to iOS won't install can really help you. In addition, Please remember to backup iPhone data before you do this to prevent data loss.