Apple rolled out new iOS for upcoming smart iPhone and Existing iPhone and iPad compatible with iOS 11. And it’s not final Apple may surprise to all iOS users with amazing new features anytime by serially releasing new iOS versions are iOS 11.1, iOS 11.2 or iOS 11.x. And not every time you got update iOS successfully on the first attempt. Sometimes you will get software update failed An error occurred downloading iOS 11 in a popup with Close and Settings options. Mostly, While we are trying to update iOS over-the-air (OTA).
Screen stuck and won’t go to the iOS installing screen (Black screen with Apple logo).
iOS 11 install on iPhone, iPad process is same like we used in the past for iOS 10 or earlier on iPhone 8/ 8 Plus, iPhone 7/ 7 Plus, iPhone 6/6 Plus, iPhone SE/ 5S.
Solutions that fixed iOS 11 software update failed on iPhone, iPad
1st: Try after some time or try again at the same time
Maybe It’s a temporary problem because of Apple service down in your region.
Check Apple service in your region.
Are you developer: Check System Status
Some of the regions may affect with the heavy load on the server due to millions of update request in short duration just after the release time or announcement. (Bypass this problem by choosing alternate techniques for update iOS 11 using iTunes)
Popup message appears with settings and Close button.
Select “Close” button to exit from the screen and re-try.
2nd: Restart and Try again
Apple ID authentication required (using different Apple ID for iCloud and App Store or any other reasons). But authentication login box not appearing on screen. To re-fit it, Restart or Reboot required.
To Restart: Press & hold Sleep/ Wake
To Force Restart: Press Sleep/ Wake + Home button until you see the apple logo on the screen.
iPhone 7 and later: Press Sleep/ Wake + Volume down button.
3rd: Update using iTunes, Download iOS 11 and Update
Get latest (Last) version of ipsw file,
Save on your local drive for clean install after backup iPhone.
#1: Open iTunes on Mac or PC.
#2: Connect iPhone via lightening cable to iTunes on Mac or PC.
#3: Go to iPhone summary tab and Find Restore iPhone button. Press Alt/ Option key from Keyboard + Restore iPhone button from Mac.
For Windows Shift Key and Press Restore iPhone button.
#4: Wait for the complete installation setup, Next to the installation restore old backup for overwriting default settings and Data files.
4th: Free up space in iOS 11
Save installation file on iPhone first then update over the air. Depends on require new space on iDevice you can take below actions,
- Clear Documents and Data for the specific app
- Delete unwanted and unused iOS app, Press and hold on an app icon until jiggle, Tap on the cross mark to delete the app.
- Delete large video file or Photos. (Must delete all Media file from recently delete folder)
- Find relevant settings for Optimize storage under Photos & Camera.
Above are the essential troubleshooting tips for iOS 11 software update Failed over the Air (Using WiFi – OTP). Don’t miss to share your experience with us by folioing tips give here.