iPhone Could Not Be Restored, An Unknown Error Occurred – How to Fix

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“I woke up to find my iPhone constantly rebooting itself. But when I tried to put it in recovery mode and restore it, I get a message saying “iPhone could not be restored. An unknown error has occurred.” My iPhone is running iOS 11. Can anyone help me fix this?”

An iPhone that is in a constant boot loop is one of the most common problems iPhone users experience. The problem can be caused by both software and hardware factors and putting the device in recovery mode is one way to fix it. But what do you do when you can’t put the device in recovery mode? This article shares a few effective ways to work around this problem.

5 Solutions for the Restore Error (iOS 13/12/11 Supported)

The following are just some of the troubleshooting steps you can take to try and solve the problem. Try them one after the other until you arrive at a solution.

01 Make Sure Your Device, Apple and iTunes Can Communicate

If the error you are experiencing is 1671, it may be possible that iTunes is downloading the latest software and all you have to do is wait for the download process to be completed. It may also be likely that you are having problems because iTunes is unable to communicate with Apple servers to download the necessary software. In this case, you may see a message that says “This device isn’t eligible for the requested build.” Generally, all you have to do to fix it is download the latest version of iTunes and then try restoring the device.

Make Sure Your Device, Apple and iTunes Can Communicate

02 Check Your Security Software

The security (anti-virus) software that you have installed on your system can prevent iTunes from effectively communicating with Apple servers. As a result, you might see a numeric error or an error message popup in iTunes when you try to restore the device. In this case, you may want to temporarily disable the security software before trying again.

Check Your Security Software

03 Check Your USB Connections

Sometimes the error may be a result of a faulty connection. Try using the USB cable that came with the device. If you don’t have it, try a different Apple cable. You may also want to switch to a different USB port or a different computer.

Check Your USB Connections

04 Make Use Of A Third-Party Tool To Reinstall iOS System

If none of the above solutions work to solve the problem, what you are experiencing is likely a software-related issue. A third-party tool like iMyFone Fixppo might be of help in this case. This is because this repair tool is designed to detect and fix any iOS-related issues. Some of its features include the following.

iMyFone Fixppo (iOS 13/12/11 Supported)

  • It can be used to fix almost all problems associated with the iOS system including a device that is stuck in a boot loop, a device that is stuck in recovery or DFU mode among very many other problems.
  • It is very simple to use and repair takes just a few minutes and a few uncomplicated steps.
  • It offers 3 modes: Standard Mode, Exit Recovery Mode, Advanced Mode. You can fix your device without any kind of data loss when using the Standard Model.

Windows version    Mac version

How To Use iMyFone Fixppo To Fix Your Device

Begin by downloading and installing the program to your computer and then follow these very simple steps to fix the device.

Step 1: Launch the program on your computer and then click “Standard Mode” to begin.

choose Standard Mode

You will be requested to connect the device to the computer and put your device into DFU mode or Recovery mode.

enter DFU mode under Standard mode

Step 2: You need to install the latest firmware on the device before it can be fixed. The program has already queued up the latest firmware. Simply click “Download”

download the latest firmware

Step 3: Wait for the firmware to be downloaded. The program will immediately begin fixing the device after you click "Start to Fix". A few minutes later, your device will get back to normal.

fixing the device

If the Standard Mode did not fix the problem, you may need to try the Advanced Mode. The steps are similar. Please kindly note the Advanced Mode will erase all the data on your device.

05 Check Your Hardware

It is also very likely that the problem is hardware related. There could be damaged components on both your device or computer causing the issue. Check the device, the computer and even the cable you are using. You might also want to try using a different computer if you are sure your device isn’t damaged.

Check Your Hardware