How to Fix an Error Occurred Installing iOS?

“Unable to Upgrade. An error occurred installing iOS 15 on your iPhone or iPad?” Here in this article, we’ll show you some troubleshooting tips to fix this update problem.

Author Avatar Joy Taylor Last Updated: Nov. 18, 2021

AnyFix – Fix iOS 15 Update Issues with Ease

Free download AnyFix to 1-click fix various iOS update issues including an error that occurred installing iOS.

Aimed at making your iPhone and iPad experience more responsive, faster, and delightful, iOS 15 is released with great features: Home screen redesign with widgets, New App Library, App Clips, No full-screen calls,  and other Improvements and Fixes. But while installing the new iOS update, some people got an error saying “unable to install update an error occurred installing ios 15”.

If you have encountered an error occurred installing new iOS problems,  how can you settle these issues? Now let’s follow this tutorial and get 6 simple tips to fix this iOS 15 install error on your iPhone iPad.

Tip 1. Use One-stop Tool to Fix iOS Update Errors

One of the reasons why this error occurs is that your iPhone has encountered some iOS system errors. In this case, you cannot update to the new iOS until you have got rid of the problem. You can fix the error by yourself with the help of AnyFix – iOS System Recovery.

AnyFix is able to repair 130+ common iOS system issues for iPhone, iPad, iPod touch, and Apple TV. When you encounter an error installing iOS, you can turn to AnyFix to get rid of update errors like iOS update not showing up, unable to check for iOS update, can’t download the iOS update, etc. Check some of its main features before using it.

AnyFix – Fix Errors during Installing iOS

  • Fix the unable to install update an error occurred error in a few clicks.
  • Lightning-fast speed to find the possible causes of the problem.
  • No system crash when it is fixing the error.
  • No viruses are carried and no erase of data, 100% clean & safe.

Free Download100% Clean & Safe

Free Download100% Clean & Safe

Free Download * 100% Clean & Safe

Let’s check out how to resolve the problem with AnyFix.

Step 1. Download and launch AnyFix on your computer > Connect your iPhone/iPad to the computer via a USB cable. Click System Repair panel.

Click on the System Repair Panel

Click on the System Repair Panel

Step 2. After that, you can choose the repair mode displayed below. Then you will go to an interface to download the matching firmware for your device. After downloading successfully, you can fix the issues by clicking the Fix Now button.

Choose A Repair Mode and Continue

Choose A Repair Mode and Continue

Step 3. After a while, the error that occurred installing iOS 15 will be fixed completely.

The iOS System is Fixed

The iOS System is Fixed

Tip 2. Remove and Download the iOS Update Again

You can also try to delete and download the new iOS update again. Just go to

  1. Navigate to Settings > General > iPhone Storage on your phone.
  2. Find the iOS 15 updates in the list > tap it and tap Delete Update.
  3. Then go to Settings > General > Software Update and download the latest iOS update.

After removing the old iOS installer, and re-downloading, you may be able to successfully get the new update.

Tip 3. Check Network Settings

There are chances that your network settings cause the problem of “unable to install update an error occurred installing ios 15”. Check your network settings and make sure the cellular network is turned on. You can reset your network settings in Settings > General > Reset Network Settings under the “Reset” tab.

Reset Network Settings

Reset Network Settings

Tip 4. Update iOS 15 with iTunes

If you are unable to install iOS 15 over the air, then updating your device to the new iOS via iTunes is an option to go.

Run iTunes > connect your device to iTunes via a USB cable > click on your device > Summary > Check for Update > Download and Update.

Tip 5. Disable Low Power Mode

Many users wound restart their iPhone or iPad in this situation, but what if restarting the device still won’t work? Some users suggest that disabling low power mode and restarting the device is helpful.

Tip 6. Check Storage on iPhone/iPad

Your iPhone/iPad may be unable to install iOS 15 due to insufficient storage on iDevices. You can go to Settings > Storage > iPhone Storage to check your available storage and free up space for the new iOS system.

The Bottom Line

Downloading and using AnyFix, is quite an easy way to fix the problem of an error that occurred installing iOS. Surely, you can downgrade iOS 15 to the earlier versions of iOS with AnyFix. And if you find this post useful, please share it. And you can comment on your ideas on how to solve this issue if you find some better solutions.

Free Download

Free Download

* 100% Clean & Safe

Free Download * 100% Clean & Safe

Author Avatar
Joy Taylor Twitter Share Facebook Share

Member of iMobie team as well as an Apple fan, love to help more users solve various types of iOS & Android related issues.

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