Unable to Install iOS 10.3, iOS 10.3.2? How to Fix iOS 10.3 Installing Error

iOS 10.3, the last major update of iOS 10, comes with great new features like Find My AirPods, New Apple File System, Apple ID Profile Page in Settings, etc. It also fixes some bugs in earlier iOS 10.2/10.1 and improves the performance of your iPhone or iPad. Now the latest version iOS 10.3.2 released, before you download and install iOS 10.3.2 on your device, please don’t forget to backup your iPhone/iPad with iCloud over Wi-Fi or backup your iPhone/iPad with iTunes from your computer.

Though it is quite easy to install iOS update, you may come across some problems during the update process. One of the most common problems that many users encounter when updating iPhone or iPad is “Unable to Install Update” error. This error pops up with a message saying “An error occurred installing iOS 10.3” (Of course, you may also have got this error when installing iOS 10.3.2 and iOS 10.3.1). Generally, you can tap Retry to install the update again, but if you have retried on your device for several times and it still doesn’t work, follow this article to get another solution to fix this issue.

An Error Occurred Installing iOS 10.3
An Error Occurred Installing iOS 10.3

How to Fix “Unable to Install Update” When installing iOS 10.3.2 and iOS 10.3.1

If you are unable to install iOS 10.3.2  or iOS 10.3.1 over Wi-Fi today, the easiest way to solve this problem is to update your iPhone/iPad via iTunes on a computer. Here are the detailed steps to complete this task:

  1. Connect your device to your computer and launch iTunes. To successfully update your device with iTunes, you can install the latest iTunes 12.6 on your computer.
  2. Select your device and click Summary > Check for Update.
  3. Click Download and Update, enter your passcode if asked.

Any other problem during iOS 10.3.2 and iOS 10.3.1 update? Inform us via comment.

13 thoughts on “Unable to Install iOS 10.3, iOS 10.3.2? How to Fix iOS 10.3 Installing Error”

  1. Hi, i tired updating using itunes but i get a message of “an error occured, there was a problem with iphone.” this has been going on for over an hour now and my phone automatically went in to recovery mode.
    At the moment, i cant access my phone and am worried.

    1. Ayodeji, have you tried to force restart your device, or something else to fix your recovery mode iPhone? Apple posted on this issue, and you can follow and have a try here.

  2. After updated my wife’s 5C the phone would not restart and had to be connected to iTunes after trying to update it then said it must be reset to factory settings and then updated from the last backup which installed 10.2.1.

  3. This is incredibly presumptuous of apple to think that everyone has a spare computer available to do an update to a phone that so much money was paid to purchase due to errors while attempting an update. This is very frustrating.

    1. Yes, though people can update iPhone to iOS 10.3 (or iOS 10.3.1) using iTunes, most of them still like to make it over the air. Here are some general solutions to fix this “Unable to Install Update” issue without computer:
      1. Reset Network Settings on iPhone.
      2. Force restart iPhone and then try again.
      3. Switch to another Wi-Fi network.

  4. Still having problems updating iOS 10.3.1. Keep getting the “Unable to Install…” error message. I have 2+GB of space, have downloaded and backed-out update several times, and shut the phone down several times. After I load the update, I still have 1.1 GB to install so should be no issues. Have tried iTunes to no avail. ITunes is on my PC which I can’t get to update iTunes. My iTunes on my pc is 12.2 so it’s outdated and wont accept my device. Any other suggestions are greatly appreciated.

  5. When I click “Check for Update” in iTunes, a finder window pops up as if I have the update on my local disk and need to select it. I don’t have the update. Anyone else see this?

  6. I have purchased 50 GB of cloud storage and I can’t download the newest update because I lack storage???? I downloaded the newest version of iTunes and tried to download pictures, videos, etc but again, there’s not enough storage. Very frustrating! What do I do???

    1. It seems that you’ve run out of internal space of your iPhone, not iCloud storage. And you can free up space on your iPhone with following tips:
      1. Delete old messages
      2. Clear browser cache
      3. Clear app documents and data
      4. Turn off Photo Stream
      5. Delete downloaded podcasts, songs, iBooks that you don’t need
      6. Turn on Optimize iPhone Storage in Settings > [your name] > iCloud > Photos

  7. Today, I am updating to the latest iOS 10.3.2, BUT FAIL, just like you posted, it shows an error occurred installing iOS 10.3.2. Tried your solutions, iTunes works well, thanks

  8. ive been updating all day and it is downloaded but when it comes time to install, it says unable to install. this has been going on most of the day. i have over 2gb of storage

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