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Top 7 Ways to Fix iPhone Software Update Failed Error When Updating to iOS 12/11

August 09, 2018 1:12 pm / Posted by Jerry Cook to iPhone Topics
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Your software update failed when you are trying iOS 12/11 update? Actually, this is not new, rather one among the common issues that appeared in the previous iOS version and affected a lot of iOS users globally. The good news is, in this article, we will share you 7 possible solutions you can try to resolve Apple software update error occurred while installing iOS 12/11 update on your iPhone X/8/8 Plus/7/7 Plus/6s/6s Plus/6/6 Plus/5s.


Solutions to Fix Unable to Install iOS 12/11 Update on iPhone

Option 1: Wait A Few Hours
Option 2: Restart Your Device and Retry
Option 3: Reset iPhone/iPad Network Settings.
Option 4: Try to Update with iTunes
Option 5: Free Up More Storage before Downloading.
Option 6: Using IPSW File to Update (For Advanced Users Only)
Option 7: Fix Software Update Failed Issue with Tenorshare ReiBoot

Option 1: Wait A Few Hours

This issue occurs may due to the Apple server is overcrowded with a huge number of users trying to download iOS 12/11 at the same time. Hence, the best solution is to just to wait for a few hours before you update.

Option 2: Restart Your Device and Retry

When the error message “An error occurred downloading iOS 11” appears, just click on the Close button to exit the error message. Then force restart your iPhone or iPad. After restarted, tap on “ Download and Install” again.

download and install

Option 3: Reset iPhone/iPad Network Settings.

If wait and restart don’t help you fix “software updated error in iOS 11”, then the problem might lie with your network. You can reboot your Wi-Fi rooter and make sure your Internet connection is working well. You just need to do the following steps:
Head to Settings > General > Reset > Reset Network Settings. After that, tap on “Download and Install” to see whether it works.


Option 4: Try to Update with iTunes

Alternatively, you can download the software update with iTunes on your computer instead of Apple’s OTA servers. This method works well most of the time, but we suggest you to update your iTunes to the latest version before start.

To do so, you just need to plug in your iOS device to your PC or Mac and when iTunes launches, click "Check for Update", which can be found under Summary pane.


Option 5: Free Up More Storage before Downloading.

There is a possibility that your iPhone or iPad is out of storage so that the iOS 12/11 software update failed. Just delete some useless data and release more space for your new iOS version before downloading. Here I recommend you powerful and professional iPhone cleaning mater-Tenorshare iCareFone for you. With this tool, you can instantly removed any unwanted junk files, apps and large files within a couple of clicks so that free up more storage space.

Option 6: Using IPSW File to Update (For Advanced Users Only)

This method is recommended for advanced users who are comfortable with firmware files and want to update to iOS 12/11 manually.

First of all, click here download the corresponding IPSW files for your iPhone.

Connect device to computer and go to iTunes Summary tab.

Hold down SHIFT key on Windows PC or Alt/Option key on Mac and click the “Restore iPhone” button.


Preview and select the iOS 11 IPSW file downloaded earlier.

Then iTunes will start installing iOS 11 on your device. Once the process has been completed, you can restore from your backup if you have made one.

Options 7: Fix iOS 12/11 Software Update Failed Issue with Tenorshare ReiBoot

If nothing above helps and you are not an advanced user, there is a much easier alternative way to get this fixed with the help of Tenorshare ReiBoot, which provides an ultimate solution to fix all iOS issues, including stuck in recovery mode, verifying update, DFU mode or cannot download or update software etc. with ease. Now let’s take a look at how it works.

Did any of these work for you ? Let us know in the comments section below or tell us if you found another way to fix “unable to install update due to an error occurred when installing iOS 12/11”. Stay updated with all the latest news and developments.

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