Full Guide to Fix iPhone Error 27

“How can I fix this iPhone error 27? I just installed the latest version iOS version on my iPhone and it needed to be restored, so I did it via iTunes but now I am getting this message: The iPhone could not be restored. An Unknown Error (27) occurred. How should I do to fix this iPhone error 27? Can I still recover my files from the iPhone?”

iPhone error 27 is caused by faulty hardware. This error will randomly reboot your device until it enters into recovery mode and when you attempt to restore and update via iTunes and when it is almost finished, it pops the error code again.

iPhone error 27 is one of the most dreading and frustrating error codes you will see ever and it is such a pain in the neck when you realized that all your photos are stuck in there including your important files and data.We decided to give you the full guide on how to fix iPhone error 27 from the basic method to more advanced ways.

Before We Fix iPhone Error 27

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Part 1. Fix iPhone Error 27 (Basic)Part 2. Fix By Entering DFU Mode (Advanced)Part 3. Fix iPhone Error 27 Via FoneDog iOS System Recovery (No Data Loss)Part 4. Video Guide: How Can We Fix iPhone Error 27?

Part 1. Fix iPhone Error 27 (Basic)

Here are the basic solutions to 'iPhone Error 27' issue, you can check these ways below to have a try yourself:

1. Restore iPhone without the SIM card.
2. Clear browser caches, history, and cookies.
3. Check your Hardware and Network.
4. Check your computer’s anti-virus.
5. Restore and Update the iPhone and computer.
6. Update the computer’s OS.
7. Factory reset the iPhone.

Solution 1. Restore iPhone without the SIM card

One of the basic methods to get rid of iPhone error 27 is to update and restore it in iTunes without the SIM card on.

1. Power off iPhone.
2. Remove the SIM card out
3. Power on the iPhone.
4. Connect iPhone to iTunes and restore.
5. Test if the issue is resolved.

Solution 2. Clear browser caches, history, and cookies

At some point, if the device has too many information stored inside it, it becomes slow to perform and delays any communication to Apple’s servers. Good thing iOS makes it easy for us to avoid doing such clearing and freeing up. iPhone effectively manages your device memory but occasionally we can clear all the browser caches, history, and cookies. To do this, follow below:

1. Go to Settings
2. Click the Safari
3. Scroll down and Choose Clear History and Website Data
4. Tap on Clear History and Data

Retry the restore and update to see if the iPhone error 27 is fixed.

Solution 3. Check your Hardware and Network

Though iPhone error 27 is not clear which part of the device hardware is malfunctioning, try to check all the hardware parts that you are using during the said update and restore via iTunes.

• Use only original USB cable that came along with the box otherwise, use available Apple USB cables.
• If the battery drains quickly, it could be faulty. You can save battery life and maximize its performance by updating the iOS version however if you are unable to do this due to iPhone error 27, you need to follow some tips on how to get the most out of your battery. Avoid fully discharging the battery life since it may go into a deeper discharge state where it becomes difficult for the battery to hold a charge. The same thing goes for storing the phone with full charge for a very long time because the battery will lose some capacity and can lead to a shorter life. It is highly recommended that you charge the iPhone around 50% if you plan to store it longer. Check your warranty as well if you need battery replacements. You may contact your service provider for the warranty status and coverage.
• Reset your network settings. Go to Settings> General>Reset Network Settings
• Update iTunes software version before update attempt. To update iTunes, open iTunes and click Help tab from the main menu. Choose Update from the drop down options. You will see a pop up prompt if there is a new available software version. Click Download iTunes.
• Retry the restore and update to see if the iPhone error 27 is now resolved.

Solution 4. Check your computer’s anti-virus

Your computer’s security software may also interfere with the communication between the iPhone and the iTunes to Apple’s servers. You can temporarily disable or turn off the anti-virus while doing the restore and update via iTunes. You can refer to the security software’s settings on how to temporarily disable it. Just don’t forget to reactivate it right after the issue is fixed.

Solution 5. Restore and Update the iPhone and computer

One of the quickest ways to fix iPhone error 27 is to do a fast reset on the device to refresh the entire system.

1. Hold the Home and Sleep/Wake button together for about 10 seconds
2. Wait until the device reboots
3. Turn your computer off and turn it back on after a while.
4. Connect both devices and attempt to redo the process.
5. Retry the restore and update

Solution 6. Update the computer’s OS

If you are using Mac, you can check for your computer’s software update. You can check the most available software update manually and automatically.

1. Open System Preferences from the Apple menu
2. Click on Software Update
3. Choose Check for Updates
4. You can set the Check for Updates interval: daily, weekly, etc… from the drop down option
5. You can also tick the box for Download Updates Automatically if you desire.

Solution 7. Factory reset the iPhone

If doing the above steps do not fix the iPhone error 27, you can factory reset the device to have a cleaner slate. But first, you need to backup all the contents inside the device to avoid any data loss.

1. Open Settings
2. Tap General
3. Tap Reset
4. Select Erase All Content and Settings
5. Enter the pass code
6. Tap Erase iPhone

Part 2. Fix By Entering DFU Mode (Advanced)

If the basic troubleshooting guides don’t work well, you can proceed to do the advanced methods but you should be fully aware of the consequences and processes. One of the most effective methods to solve iPhone error 27 is putting the device into DFU (Device Firmware Upgrade) Mode.

Enter DFU Mode:

1. Plug the iPhone into your computer using a USB cable.
2. Power off the device.
3. Hold the Power button for about 3 seconds.
4. Hold down the Home and Power buttons for about 10 seconds.
5. Release the Power button while still holding the Home button.
6. You will be alerted by iTunes saying that it has detected a device in Recovery Mode.
7. Restore via iTunes by launching it and going to the Summary tab
8. Click Restore
9. Wait until the iPhone restarts
10. Slide to set up. You can continue setting up your device from here.

Note: this method will wipe out all the data stored in the device so better be prepared for the outcome of putting your iPhone into DFU mode.

Part 3. Fix iPhone Error 27 Via FoneDog iOS System Recovery (No Data Loss)

Nobody wants to lose data from their iPhones just because an annoying error code appeared. However troubleshooting this iPhone error 27 can be too complicated especially when you know there isn’t any specific resolution. It can be caused by anything, from hardware to faulty software and so much more. Good thing, a third party program called FoneDog iOS System Recovery developed a genius way to fix the iOS system conveniently without having to undergo series of repairs. This software can really help people who don’t want to spend and waste too much time searching for solutions. If you are curious enough on how FoneDog iOS System Recoveryreally works, follow these guides:

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Step 1. Download and Install FoneDog iOS System Recovery On Your Computer

Whether you are using Windows or Mac computer, FoneDog iOS System Recovery is available for download on both operating systems. After you have finished downloading, install and run the program by referring to the onscreen instructions. When the program was installed successfully, click on More Tools and choose System Recovery.

Step 2. Connect iPhone with a USB Cable

After you clicked iOS System Recovery, connect the iPhone to the computer and click the Start button to begin the repair

Step 3. Download Firmware Package

In the next screen, you will be asked to enter the correct iPhone details as part of the process to download and extract the right firmware version. You can refer to the back of the device for the make and model. You may also check the software version of your device by going to Settings>General>About>you can find all the necessary information here. When you have supplied the required details, click on Repair to continue.

Step 4. Repair iPhone Error 27

The repair may take some time but you can see its progress on the program screen. Be sure that the connection between the iPhone and the computer is stable as well as your wireless network. The iPhone will reboot and starts up normally without the annoying iPhone error 27 anymore.

FoneDog iOS System Recovery is a perfect solution for any kinds of iPhone error codes such as error 27, 1009, 53, and much more. This software fixes any glitch in the iOS and returns your iPhone back to its normal state without compromising your data. It also fixes any white screen, blue screen, red screen, freezing, Apple logo, stuck on recovery mode, looping on start and much more. So you have all the reasons to choose FoneDog iOS System Recovery for a better mobile experience.

Part 4. Video Guide: How Can We Fix iPhone Error 27?