Are there times when your iOS 12 update failed with iTunes or you get error codes and messages when trying to update or restore iOS in iTunes? This is a common thing that happens to most Apple users. It can be very frustrating if you can’t use your phone because you don’t know what to do. In this article, we will show you simple and quick methods of fixing these iOS issues.


1. Check the Internet Connection

There are times when you are trying to download software and the software does not seem to be downloading. Then an error message appears saying, ‘there is a problem downloading the software’ or ‘the device is not eligible for the requested build’. If you are downloading from iTunes you might also get error codes. This means you need to check the network connectivity.

In order for restoration or installation of the latest iOS software and verification of the build, iTunes has to be able to communicate with Apple servers. Checking that your computer is connected properly to the internet is the only way you can resolve the issues of iOS 12 update failed with iTunes and the specific iOS updates. This way there will be proper communication between your computer and iOS devices.


2. Wait for A Moment and Try Again

Whenever there is a new iOS firmware, everyone wants to be the first to download and install it on their devices. Millions of iOS users will try to download it which means that there will be a huge traffic on the Apple servers than it can handle at a particular time. Many of the requests will most likely fail as the servers are not built to handle such huge traffic all at once.

It is therefore advisable to wait a few hours or even days before trying to download and install the new firmware so that the traffic to the servers will have reduced. This way you will not receive any error messages or iOS 12 update failed with iTunes.

3. Upgrade iTunes Version

If you are trying to restore or update your computer or iOS device and you receive an error message, it might be one of these two reasons; one, your computer can’t connect to the server or two, you’ve got an old iTunes version.
You can resolve this problem by trying the following steps:

  • You can update your computer to the latest iTunes version.
  • Plug your keyboard, mouse and iOS 11/10/9 device directly to your computer and remove any other USB devices.
  • Restart your iOS devices and your computer.
  • Restore and update your iOS device again.


4. Check USB Connection

You may be trying to restore or upgrade your iPhone or iPad using iTunes and you get various invalid responses like the iTunes error code. This may be caused by a USB connection problem. You can try fixing the issue by connecting your USB in a different USB port or changing the USB cable you are using.


5. Download iOS 12 IPSW File to Upgrade

You might have tried all other methods and failed to download the firmware. In order for you to update your device your only option would be to manually download the iOS 12 IPSW file. This will require you to be an advanced user if not, it is best to wait for a few hours then try and update again. You can also follow the steps below.

Step 1: Download the iOS 12 IPSW file for your phone. Make sure the downloaded IPSW file corresponds with your model.

Step 2: Connect your iOS device to your computer then launch iTunes.

Step 3: On the summary tab of iTunes, hold the shift key if you are using Windows or if using Mac, hold the Alt/Option key. Then click Restore iPhone.

Step 4: Browse for the iOS 12 IPSW file you had downloaded and then select it. iTunes will begin to install it in your device. Once complete, restore your data and files from your backup.

6. Using a 3rd-Party Tool to Fix the iOS 12 Upgrade Failure Issue

iMyFone iOS System Recovery is an iOS repair software that helps you to fix your iPhone back to its functioning state. It is compatible with all iOS devices and versions of the same. And there are three modes in this software that will help you in fixing iOS issues with a higher success rate.

Try It FreeTry It Free

Step 1. Before selecting the mode you want to use connect your device to your computer using a USB cable. Then launch the iOS recovery system and select the standard mode which will request you to enter DFU or recovery mode for repair to begin.

interface of iMyFone iOS system recovery

Step 2: Set your device on DFU/recovery mode. To put your device on DFU mode click Start then press and hold the Sleep/Wake and Home buttons for 8-10 seconds. Let go the Sleep/Wake button but continue holding the Home button for 5 seconds. If it does not go to DFU mode put it on recovery mode.

 enter DFU mode under Standard mode

To put it on recovery mode press and hold Sleep/Wake and Home buttons at the same time. You will see the Apple logo but continue holding till you see ‘Connect to iTunes’ icon.

Step 3: Download the new firmware on your device. The latest version of iOS will be automatically downloaded on your device once the program detects it. Then click Download to install. If the device is not detected choose the device then manually download the firmware.

download firmware

Step 4: Once downloaded, click Start to fix for the program to automatically start fixing your device. When the process is through, check if your device will start. If it does not start re-try or try the advanced mode.

fixing ios issues

Having the knowledge of how to fix iOS 12 update failed with iTunes can help many Apple users know what to do when such issues arise on their phones. The above methods will help you to quickly identify and fix the problem.