Computer, Internet, iOS, Android, Smart Phones,
Microsoft Windows, MAC, Linux Tutorials, Tips and Guides

iOS Update, Restore and iTunes Related Errors and Fixes


Have you ever encountered iTunes errors again and again while updating or restoring iOS? Few errors are like; “This device isn’t eligible for the requested build”, “Error 17″, “Error 1639″, “Error 3004″, “Error 3194″. If you are upgrading, downgrading or restoring iOS on your iPhone, iPad or iPod by (using iTunes) connecting it to MAC or Windows, you might encounter error. This is a problem faced by most of the users (generally but not limited to) with an outdated iTunes application software and/or a misconfigured hosts file on the Windows or the Mac. Apple support page does not point to the cause of each error. That is why we have compiled a list of instructions that should be considered to avoid any error while updating or restoring iOS.

iTunes Errors

Error 3004 indicates a network-connectivity or traffic issue. If you see this error, wait for few minutes and try again.

Error codes such as 17, 3014, 3194, and errors in the range of 3000 to 3999 (3004, 3013, 3014, 3018, 3164, 3194, and so on), generally mean that iTunes cannot contact the update server ( on ports 80 or 443. It may be the result of the connection to being blocked or is being redirected. Connection to may be blocked in hosts file in your Windows or MAC. If you have used iOS hacking utilities before, then also it can block the connection to Apple servers.

Errors 2, 4, 6, 9, 1000, 1611, 9006, 9807, 9844 indicate that security software (antivirus/firewall) is blocking communication between device and the Apple servers.

Errors 13, 14, 1600-1629, 1643-1650, 2000-2009, 4000-4016 indicate problem with the USB port, cable, dock or hub. It indicates that the device was disconnected during restore.

Errors 1, 3, 10-47, 1000-1020, 1669 indicate hardware related issue and these also might indicate connection interruption between Apple servers and device. These also might indicate security software or hosts file interfering communication between device and Apple servers.


All these errors can be avoided if you follow few instructions given below:

  • Update to the latest version of iTunes on computer.
  • Verify the computer’s date and time are accurate.
  • Check that your security or firewall software is not interfering with ports 80 or 443, or with the server Disable antivirus and firewall temporarily while you update or restore iOS.
  • An entry in your hosts file (in Windows or MAC) may be misconfigured for Apple servers ( Reset hosts file, comment entry by adding # before that entry or better remove that entry from hosts file.
  • Internet proxy settings can cause these errors. If you are using a proxy, try without using one or try resetting network settings.
    Reset network settings (on device – ipad/ipod/iphone) by going to
    Settings > General > Reset > Reset Network Settings
    Wi-Fi > Connect Again.
  • Check USB connection (port or cable)
  • Internet connection should be consistent

Also see iOS Update Requirements – Before you Upgrade iOS on Apple Device

Error Caused by Previous Jailbreak

Note: Jailbreaking also may cause error while updating iOS on a jailbroken device. The fix is to restore iOS on a jailbroken device. Updating iOS on a jailbroken device may also cause loss of some GBs on your device. The fix is again to restore and not the update.

Fix iTunes Error 3194 for a Jailbroken iPhone/iPad/iPod by using TinyUmbrella

  • Download TinyUmbrella
  • Connect your device with computer and close iTunes if it opens automatically.
  • Open TinyUmbrella and then click on “Start TSS Server”
  • Put your iPhone in DFU Mode
  • If you are updating your firmware, you’ll have to click on Restore while pressing shift key on Windows or Option key on Mac and point to the iOS ipsw file you downloaded.
  • iTunes will restore it to the iOS firmware you pointed to and update your device to it.

Apple Support pages are here, here and here.

Also consider following tips:

Update your operating system

Install available updates for your Mac. If you have a Windows PC, make sure you get PC software updates from the Microsoft website (or Windows update service).

Unplug Extra USB Devices

Keep only your iOS device, keyboard, and mouse plugged in directly to your computer. Unplug extra USB devices that you do not need while yo update your iOS.


Restarting device and computer may help. Turn off your computer and your device, and turn them on again.

Try Again

Update or restore your iOS device again. In some cases Apple servers may be too busy to respond or process your request. Trying again might resolve the issue.

Similar Tips

About Author

The CEO of tipsNinja at your service. I spend quite enough time with computers and smart devices. I learn everyday and I like to share what I learn. You can subscribe to updates or receive updates in your email. If you have any question, or tipsNinja could not help you in any way, please ask it in Questions/Answers section.

Leave A Reply