With Mac machine is updated, Finder or iTunes is also up to date.If any updates are available, click Update Now to install the software.

From Apple Menu, choose System Preferences > Software Update.

You should always keep them up-to-date to benefit from the latest features and bug fixes. ITunes error code 4000 will occur when your computer (PC or Mac) and iTunes is out of date. If you prefer to update iPhone using iTunes or Finder on computer, do the following: 2.

When download is done, tap on Install Now.

If you see an update available, tap Download and Update.

An unknown error occurred (4000)' while updating iPhone on computer, you could try downloading the software and installing it on the phone wirelessly. If you see a dialog window popping up with 'The iPhone could not be updated. The guide is applicable for all iPhones no matter which iOS you're using. How to Fix iPhone Error 4000?įollow these steps in order, checking after each one to see if you still get the iTunes or iPhone error 4000. It could also be the result of faulty USB connection and USB communication to the iPhone. It's possible that the iPhone is locked with passcode while the update was executing.Īnother, the error will be almost always related to an outdated iTunes or Mac that is out of sync with the iPhone and Apple server. One obvious reason is that the latest version of iOS software available in iTunes has been already installed on the phone. There are several reasons why an unknown iPhone error 4000 may occur. What Causes the Update Error 4000 on iPhone? If iTunes keeps giving you error code 4000 during iOS update, you could need to take direct action to sort it out. Verify this on the device by going to Settings > General > Software Update. In some cases, you can ignore the message as your iPhone is already updated with the version of iOS iTunes downloaded. The prompt also includes the 'More Information' option about the details of the code. IPhone update error 4000 is also called iTunes error 4000, and you may receive the error message after software update downloads and attempts to install to your phone. You could also read If you can't update your iPhone to see if this can solve the problem. This iPhone update error is a common issue, but it's not too hard to fix it. When plugging your iPhone device to the computer and do the latest update with iTunes or Finder, you would undoubtedly hit with an error message that says: The iPhone could not be updated.

On-screen errors are always a source of annoyance. Tried restarting my phone a few times, etc. Now after over 30 minutes I got this error 4000 repeatedly. It asked if I would like to update my iPhone now, and I chose Update.

What is Unknown Error 4000 that doesn't allow me to update my iPhone 7 to iOS 11.1 in iTunes (latest). IPhone Update Error 4000: What Is It and How to Fix It - Simple Steps

Macbook software update error