IOS 15 won’t install. Reasons and solutions

iOS 15 is out now, but not everyone is in a hurry to install it. There are actually only two reasons for this. First, people are afraid to be the first, preferring to wait for feedback from those who turned out to be bolder and were not afraid of possible problems. Second, people simply cannot renew themselves due to circumstances beyond their control. But these circumstances are already much more than two. Therefore, now we together with you will figure out why it is not possible to update the iPhone , where to look for the root cause and what to do about it so that the update still falls into place.

iOS 15 – no matter how long-awaited this update is – it still carries certain problems that need to be somehow solved


  • 1The iOS update is not installed. Causes
  • 2IOS update check failed. How to fix
  • 3How to update iPhone via iTunes
  • 4iPhone doesn’t see iOS update. What to do

The iOS update is not installed. Causes

IPhone not updating? There can be many reasons, but they are all solvable.

The main obstacle that prevents many users from upgrading to iOS 15 are errors called “Failure to check for updates” and “Failed to install updates”. As the name suggests, the first error occurs at the stage of searching and downloading the update, and the second at the stage of installing it. However, they arise for the same reasons:

  • Insufficient memory on iPhone
  • Loading takes a long time (high server load)
  • There is no access to the update server (bad connection to the network or block from the operator’s side)
  • Low battery

The method for fixing these problems, despite the fact that they are different, is actually the same – you need to install the iOS update not directly from the iPhone, but using a third-party tool. But the instrument itself may already be changing. We will describe all the most convenient ones, and you will already decide what is right for you.

IOS update check failed. How to fix

The most convenient way to eliminate the failure of the update check is to use a specialized utility that was originally developed for this purpose. I’m talking about Tenorshare ReiBoot . It is a tool created to solve the problems that arise during the updating process of iPhone and iPad. With it, you will be able to install an iOS update even if the iPhone is out of memory or unable to communicate with Apple’s servers.

  • Downloadand install Tenorshare ReiBoot on your computer;

The solution to any iOS problem starts from this screen.

  • Connect iPhone to computer via cable and launch ReiBoot;
  • On the ReiBoot start screen, press the green Start button;

Standard repairs will help solve most of the problems.

  • Then select “Standard repair” and confirm the download of the update;

ReiBoot will download the latest update itself and install it on your iPhone

  • Click “Start repair” and wait for the procedure to complete.

Download ReiBoot

Круто, что в процессе стандартного ремонта ReiBoot не удаляет данные из памяти iPhone, а сохраняет их ровно в том виде, в котором они были при подключении смартфона к компьютеру. iTunes так не умеет.

This method is complex. It consists in solving several problems at once. First, the utility directly connects to the Apple server and downloads the update itself. Secondly, it does not use the iPhone’s memory, which is important if it is absent or very little, but uses computer storage. Thirdly, it fixes errors if the update has already been downloaded, but for one reason or another it is not installed.

How to update iPhone via iTunes

For those who prefer third-party stock tools, the option remains with iTunes or Finder, depending on the operating system you are using. I will explain using Finder from newer versions of macOS as an example. It performs exactly the same function as ReiBoot, with the only exception that the standard Apple utility cannot fix the problems that have arisen without deleting the data.

  • Connect iPhone to your computer via cable;
  • Launch Finder and go to the “General” section;

You can update your iPhone either through iTunes or Finder

  • Find here and click the “Update” button;
  • Wait for the update to download and install.

This method is fine if the update just won’t download on the iPhone. But if it loaded, but the installation process stopped for some reason, you will need to act differently, namely, resort to the recovery procedure. It consists in completely deleting data from the iPhone and installing the most current version of iOS on a clean device.

  • Connect iPhone to your computer via cable;
  • Launch Finder and go to the “General” section;

If the update stuck, try restoring your iPhone

  • Here find and click “Restore iPhone”;
  • Wait until the end of the recovery and update procedure.

After that, you will only have to restore the data from the backup, which you should have taken care of in advance.

iPhone doesn’t see iOS update. What to do

iPhone not seeing update? There may be several reasons for this.

If the iPhone does not see iOS 15 , there may be several reasons for this:

  • Can’t connect to servers
  • Problems with your internet connection
  • You have a valid beta profile
  • You have installed another incompatible profile

Since these problems are completely different in nature, then they need to be solved in different ways.

If your internet connection is good , but your iPhone won’t connect to the update server , don’t worry – this is possible. Most likely, the Apple servers are currently under heavy load, and you can connect to them to download the update later. For example, the next day.

If there is no time to wait and want to update right now, there is a chance to help the cause by hard restarting the iPhone . Sometimes this is enough to “break through” the connection and still contact the server. You need to reboot the iPhone exactly in a hard or emergency way:

  • iPad with Face ID: Press and quickly release the Volume Up button, then the Volume Down button. Now press and hold the power button until the apple logo appears.
  • iPhone 8 and later: Press and quickly release the Volume Up button, then the Volume Down button. Then press and hold the power button until the apple logo appears.
  • iPhone 7, 7 Plus, and iPod Touch 7: Press and hold the Power and Volume Down buttons at the same time. Continue holding them until the apple logo appears.
  • iPad with Home button, iPhone 6s, iPhone SE, or iPod Touch 6: Press and hold the Home button and the Power button at the same time. Hold them until the apple logo appears.

If you have previously installed a profile on your iPhone (not necessary for beta testing), the problem may be in it. So, it needs to be removed:

  • Go to “Settings” – “General”;
  • In the window that opens, select “Profiles”;

Remember to delete the profiles that you installed earlier

  • Find all the profiles you have installed;
  • Open each one and remove them from the system.

Well, if all the tips from this instruction are followed, and the update still does not occur, it makes sense to check the activity of Apple servers . It happens that the company turns them off for prevention or because of some difficulties in the work. Therefore, it will not be superfluous to follow this link and make sure that the servers are working normally.

by Abdullah Sam
I’m a teacher, researcher and writer. I write about study subjects to improve the learning of college and university students. I write top Quality study notes Mostly, Tech, Games, Education, And Solutions/Tips and Tricks. I am a person who helps students to acquire knowledge, competence or virtue.

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