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How to Fix iTunes Error 27 When Updating or Restoring iOS Device

Sept 22, 2017 11:25 am / Posted by Jenefey Aaron to iTunes Tips
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“Q: Unknown error (27) unable to restore I have just installed the latest Apple software update on my iPhone 5 and it had to be restored. Trying to restore it via iTunes I am now getting "unknown error (27)" Does anyone know what I can do to restore my iPhone?”

During the process of updating or restoring, users may meet with many different cases of iTunes error. If you are suffering from iTunes restore error code 27, this article will give you the most comprehensive tutorial on how to fix iTunes error 27.

Part 1: How to Fix iTunes Error 27 Trough iTunes

When get into this kind of iTunes error trouble, the first thing we should do is to check and repair iTunes. iTunes is the software which could be easily broken for data loss in library. Try to download it from the official site (加nofollow) and reinstall again.

If reinstallation of iTunes cannot help to fix iTunes error 27 in updating iPhone, iPad or iPod touch. We recommend you have a try by using Tenorshare TunesCare, which can help you fix all iTunes syncing problems and iTunes errors for free.

Free Download Tenorshare TunesCare:
Free Download Windows Version
Free Download Mac Version
Secure Download

Run the program and you will see the interface below, then click “Fix All iTunes Issues”. And Tenorshare TunesCare will automatically detect the performance of your iTunes.

itunes match is on can't sync music

If it tells you “Your iTunes performs abnormally. Fix it immediately.” You then are required to click “Repair iTunes” to fix the problems of your iTunes.

itunes match is on can't sync music

The repairing process may take you about 2 minutes. Patiently wait and iTunes will restart. Try again to update or restore your iPhone X/8/7/7 Plus/SE/6s/6/5s/5 to check.

Part 2: Fix iTunes Error 27 by Repair Operating System

In order to excluded the reasons which made this iTunes error 27 when updating iOS 11, we then can also hace a try to check your iPhone, iPad or iPod touch. By this way, repair operating system can be a good choice and Tenorshare iCareFone can help you do this.

Free Trial Tenorshare iCareFone(iPhone Care Pro) Software:
Free Trial Windows Version
Free Trial Mac Version

Run the program, connect your iOS device with computer and click "Repair Operating System".

Then Tenorshare iCareFone will detect the performance of your iPhone. If your iPhone is functioning properly, you can also get its system optimized.

function properly

If your iPhone, iPad or iPod touch is detected and you see the interface below. You can follow Tenorshare iCareFone's guide and to get your iOS operating system repaired.

repair instructions

Part 3: Backup/Restore iPhone with iTunes Alternative

If you still encounter errors messages when you upgrade or restore your iPhone/iPad/iPod, we then suggest trying this iTunes alternative –Tenorshare iCareFone, it can help to backup/restore and do better than iTunes

Launch Tenorshare iCareFone and connect your iPhone7/7 Plus/SE/6s/6/5s/5 with it. Choose “Backup & Restore” from the main interface. According to your needs, you can choose to backup or restore your iOS device.

repair instructions

If you want to backup important files, you are allowed to select whatever you want in Tenorshare iCareFone. When the backup process is done, you can choose to restore to device or export to computer.

If you are going to restore from backup, Tenorshare iCareFone will detect your backup files and display in the program. You can easily to preview the detail and get it restored.

repair instructions

After reading this article, you then must have successfully backed up or restored your iPhone/iPad/iPod. Next you meet with the same problem of iTunes cannot update error 27, don’t forget come to us!

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