Actually, this is not new, rather one among the common issues that appeared in the previous i OS version and affected a lot of i OS 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 i OS 11 update (also can be applied to i OS 10.3.3/10/9/8) on your i Phone 7/7 Plus/6s/6s Plus/6/6 Plus/5s.There is a possibility that your i Phone or i Pad is out of storage so that the i OS 11 software update failed.Just delete some useless data and release more space for your new i OS version before downloading.When the error message “An error occurred downloading i OS 11” appears, just click on the Close button to exit the error message. After restarted, tap on “ Download and Install” again.If wait and restart don’t help you fix “software updated error in i OS 11”, then the problem might lie with your network.You may choose to update your device wirelessly (over-the-air) or download the update through i Tunes.The first method requires a stable connection to the Internet (through Wi-Fi) while the latter requires you to have a computer that has the latest version of i Tunes software installed.
Your software update failed when you are trying i OS 11 update?
Connect device to computer and go to i Tunes Summary tab.
Hold down SHIFT key on Windows PC or Alt/Option key on Mac and click the “Restore i Phone” button.
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 Alternatively, you can download the software update with i Tunes on your computer instead of Apple’s OTA servers.
This method is recommended for advanced users who are comfortable with firmware files and want to update to i OS 11 manually.