How do I reinstall iPhone OS?

How to Install, Update, and Downgrade iOS (Including Betas)

This guide will tell you everything you need to know about installing new versions of iOS, upgrading to them, downgrading, and restoring data. It contains the following:

How to Safely Update iOS on Your iPhone or iPad

Make sure your information is safe

Before starting an iOS update, make sure your iPhone or iPad data is saved. You have two options: an iTunes or an iCloud backup.

Store your files in a safe place when you make iTunes backups. Make an iTunes backup and a copy of it, which you can save as a "Plan B" on Dropbox or another computer. If you don't know where the iTunes files are on your computer, check out this article.

Deactivate after creating a new iCloud backup the automatic iCloud backups, after the backup has been performed . This prevents unwanted backups from being made after the update. This is an important step as your initial iCloud backup may be overwritten by an incomplete backup or by backing up the phone in a failed state.

To turn off automatic iCloud backups, go to → and click. You will find a switch button. Turn it off and confirm.

Once you've backed up your data, it's time to safely upgrade your iOS. The process is simple.

There are two ways to update your iPhone or iPad to the latest iOS from iCloud or iTunes.

If you're using iCloud or over-the-air (OTA) updates, follow these steps. Go to in the menu and select. You will see an option called "Download and Install". Click on it to start the iOS update. If your phone has a restriction PIN, you will be asked to implement it.

If you choose to use the iTunes method, you should install the latest version of iTunes. Then connect your iPhone or iPad to your computer and select your iOS device. Under Summary, choose Search for, then choose. Wait for the upgrade to complete. Do not disconnect your iPhone from your computer until the iOS update is complete.

Common Reasons for iOS Updates Failed - and Fixes 👩‍⚕️

An iOS upgrade can fail for many reasons. These are the most common and the fixes that should be used to ensure the next update is successful:

  1. A network error. When using the OTA method, it is the most common reason for an iOS update to fail. You will get a message that there was an error downloading iOS. If you've tried restarting iPhone, or turned off and reactivated Wi-Fi and can't get it to work, you still have a solution: reset your wireless connection. Go to → → and select. Check your Wi-Fi connection after the reset.

  2. You need more free space on iPhone. The default message for this error is "Insufficient disk space to download". Sometimes the reason why an iOS upgrade fails is due to the amount of free space on the phone. To solve this problem, have the app deleted or, in the worst case scenario, create an iTunes or iCloud backup and then delete some files. If you have backups, you can always get your files back after the update.

  3. A power failure or a disconnected cable. This is an uncomfortable problem that is harder to fix. You need to check whether the iPhone is still working or not. The best solution is to plug it into your computer and then start an iTunes recovery. After the restore is complete, you can try again to update your iPhone to iOS.

How to get your data when the iOS upgrade failed

Instead of upgrading to iOS, sometimes you get stuck with a failed update or older version and a corrupted backup. Even if an update fails, you can still get data back as long as you use iPhone Backup Extractor.

Depending on where your data was backed up, we recommend reading either our guide on how to restore iCloud data or information on how to get data back from iTunes backups.

If you get stuck, please send us a message in the live chat. We'd love to help.

How to install an iOS beta

Important things to know before installing an iOS beta

We strongly recommend that you make a backup with iTunes or iCloud before every iOS update. In fact, such backups should be done regularly in case you ever need to rely on them. This will cover you if:

  • iTunes does not want to restore this data
  • You don't want all of your data from iCloud or iTunes - just certain files or
  • You want to have offline access to all data on your iOS device on your computer

How do you access your data when the above happens? It's easy. Use iPhone Backup Extractor on Windows or MacOS and access your iTunes or iCloud backup with just a few clicks. Our competent support will be happy to help you and share your knowledge and experience. So if you run into any problems or need any help, just reach out to us.

To install a full image of an iOS beta on your iPhone, iPad, or iPod, you should be using the latest released version of iTunes. If you don't have it installed, you can download it from Apple's website. However, modern versions of iOS can be upgraded to a beta version using an over-the-air (OTA) backup. OTA updates are faster and easier, and don't require iTunes or a computer.

If you need more help, don't forget that Apple is releasing a document on how to use the betas.

How to install iOS 14 beta on your device (also works for iOS 13-10 betas)

Through the developer beta

  1. On your iOS device, navigate to developer.apple.com in Safari

  2. Click Account and sign in with your Apple developer account credentials

  3. Select the "Downloads" section

  4. Find the latest beta installer profile for iOS and click to download it

  5. Your iPhone will display a prompt asking if you want to install a configuration profile: select this option

  6. On your iPhone, go to → → and tap

  7. Wait for the installation and restart the computer - and that's it!

Through the public beta

  1. On your iOS device, go to beta.apple.com/profile and tap the "Download Profile" section to register your device

  2. Your iPhone will display a prompt asking if you want to install a configuration profile: select this option

  3. On your iPhone, go to → → and tap

  4. Wait for the installation and restart the computer - and that's it!

Learn about Apple's iOS beta programs

There are two types of iOS beta: the public beta and the developer beta, available through the Apple Developer Program.

The difference between the public beta and the developer beta is that the latter allows developers to create or update third-party apps for iOS. Therefore, this may include access to additional resources compared to those included in the public beta.

Running the betas on your primary iOS device is not a good idea, not least because they can lead to data loss, periodic crashes, and it can be difficult to roll back. At least without losing your data. Nevertheless we help there. 👊

The developer beta starts a few weeks before the public betas and is updated earlier and sometimes more frequently.

Both versions include a "Feedback Assistant" app that collects input from people who are registered in the beta program. The "Apple Beta Agreement" contains a confidentiality agreement so that when you register, you cannot talk beyond the software that is beyond what Apple publishes. Apple Betas should be installed on a device that is not shared with others and that is not your primary device. Installing the beta update does not void your hardware warranty.

Every year it becomes easier to sign up for the betas. Have fun exploring!

How to install an older iOS beta (iOS 9 or lower)

Before the changes in iOS 10 that made the beta installation process easier, there were a few additional steps to install betas from older versions of iTunes. In particular, the registration of your device was required.

Membership in the Apple Developer Program is required to register yours and access betas. This has an annual membership cost of $ 99.

Two ways your iPhone too

How to find the UDID using iTunes
  1. Connect your iOS device and launch iTunes

  2. Choose your device type

  3. On the Summary tab, click the Serial Number label to find the 40 string

  4. Right click and choose Copy.

How to find the UDID using Xcode

  1. Connect your iOS device and launch Xcode on the Mac

  2. Go to the "Organizer" and select your device

  3. and copy the string

How to register an iPhone in the Member Center

  1. Log in to the Apple Member Center with the UDID in your clipboard, click on and select

  2. Click the icon to register

  3. Give your iOS device a name and paste your unique device identifier copied from iTunes or Xcode

  4. Click on Next and confirm your entry to complete the registration process

Then return to the Member Center page and scroll through the, and. Select your device and start the download.

You have a downloaded or file to extract. These files contain the file you need for the installation.

Opening DMG files on Windows

Betas from iOS 7 and earlier were distributed as archives. Windows users can't open these natively, but our DMG Extractor app can do it for you.

Here's how to install an IPSW recovery file on your iPhone or iPad

  1. Before proceeding, deactivate the “Find my iPhone” in → →

  2. Connect your iOS device to your computer

  3. Launch iTunes and select your device in the top right corner

  4. If your iOS device wants to trust your computer, agree and enter the code on your device

  5. Make an up-to-date iTunes backup to protect your data

    We recommend iTunes locally because backing up and restoring is faster

  6. On the Summary tab, hold down the (on Windows) or the (on Mac) and click the Restore or Check for Updates button

  7. Select the iOS Beta Image and click Open to finish the installation

  8. iTunes informs you that your iOS device updated (even if you have selected an older firmware) and will check this update with Apple. Click on "Update".

  9. Your device will restart after the installation is complete. A network connection is required to complete activation

  10. When you restart your device, "Upgrade slide" will appear: unlock, enter password, activate if necessary and wait for the installation process to complete

That's it! You should now have successfully updated to the beta version of iOS you selected.

How to upgrade from iOS Beta or Gold Master to the official version

If you're a developer and you're running a Gold Master version of iOS from the Developer Beta Program, you know that the Gold Master is often binary identical to the official version. In this case, no update is required. However, sometimes it doesn't, and there is no obvious way to get to the final release.

The answer calls for classic backup, update and restore. You must download the version of iOS before you can follow the steps above to install an IPSW recovery file.

Here's how to downgrade an iPhone or iPad from iOS beta

Restoring to an older version of iOS can mean that you may not be able to get the collected data if you are using the newer version of iOS on your device. You cannot roll back an iOS beta iTunes or iCloud backup to an older version of iOS. If you are a naughty jailbreak user, your saved blobs will be lost after downgrading.

Restoring your iTunes or iCloud backup data to your iPhone or iPad is possible for most backed up files, but not trivial. Here is our guide on how to get some of the most important backup data back on your iOS device.

Important: before downgrading from an iOS beta

It is important that you back up your iOS device to either iCloud or iTunes so that you can restore your data if something goes wrong. We've already said it, but we can't say it enough: make sure you back up your device before doing the steps below.

You should be using the latest version of iTunes.

An iOS downgrade can result in lost or unavailable data. Apple does not recommend downgrading, so caution should be exercised.

Downgrades are possible as long as Apple continues to sign the firmware that you want to downgrade to. Typically, Apple stops signing previous versions of iOS about a week or two after a new version.

If you are getting an "This device is not suitable for the build requested" error message, it could mean that either Apple no longer signed the iOS firmware or you downloaded the wrong one.

Here is our step-by-step guide:

  1. Download the older firmware for your device and make sure you download the appropriate version for your iPhone, iPad, or iPod

  2. Before proceeding, deactivate the “Find my iPhone” in → →

  3. Connect your iOS device to your computer

  4. Launch iTunes and select your device in the top right corner

  5. Make an up-to-date iTunes backup to protect your data

    We recommend iTunes locally because backing up and restoring is faster

  6. Put your device in DFU mode. To do this, turn off the device, press and hold the power button for 3 seconds while holding down the home button for 10 seconds. Release the power button and hold the Home button until iTunes displays the recovery mode confirmation. Click OK.

  7. Then click the Restore iPhone button and choose Restore and Update to confirm.

  8. iTunes will give you some information about the iOS update and wait for you to hit the "Next" and "Agree" buttons. iOS will be downloaded and installed on your device.

  9. Your device will restart after the installation is complete. A network connection is required to complete activation

  10. When you restart your device, "Upgrade slide" will appear: Unlock, enter password, activate if necessary, and wait for the installation process to complete

That's it! You have successfully downgraded.

If you need help restoring an iOS backup from a newer iOS device to an older version of IOS, here is how to do it.

Having trouble? Don't be a stranger: reach down or leave a comment below!