What to do if something goes wrong during iOS 11.3 installationDuring major iOS updates, sometimes an error put iPhones into Recovery Mode during the installation process. Here's what to do if that happens to you.
You may recall when iOS 10 launched, some users experienced a crash, which sent their iPhones and iPads directly into Recovery mode during the installation process. It was reported as happening again to some in iOS 11 (though to a much smaller degree). It's not likely to happen to you, but it doesn't hurt to be prepared for the possibility. If for any reason, your iPhone or iPad goes into Recovery mode during, before, or after installing iOS 11.3, these steps will still help you.
NOTE: You'll need to be able to connect your iPhone or iPad to your computer so you can access the Recovery tools in iTunes. If you don't have a computer, you'll have to find someone who does or visit an Apple Store and have a technician help you.
Hopefully, you've backed up your iPhone or iPad before you initiated the iOS update and will have a fresh back...
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What to do if something goes wrong during iOS 11.3 installation