[Can't Miss] How to Fix Cannot Update to iOS 18

Jerry Cook
Updated on 2024-09-02 to iOS 18

Apple’s iOS 18 release date has arrived and users, excited to try new features are downloading new iOS 18 update with enthusiasm. However, all your fuzzy feelings can evaporate when you find out your iPhone cannot update to iOS 18.

So, what will you do to fix it when you don’t know what’s causing this issue. Luckily, you won’t have to guess. This post discloses numerous reasons which might be preventing your iPhone to download and upgrade to iOS 18. We’ll also share 6 ways to fix this issue. So, keep scrolling!

Part 1. Why Can’t I Download iOS 18?
Part 2. How to Fix Cannot Update to iOS 18?

1. Upgrade to iOS 18 in One-click & Hassle-Free
2. Restart Your iPhone
3. Check iOS 18 Supported Devices
4. Make Sure Storage Space Is Enough
5. Reset Network Settings
6. Use iTunes/Finder to Upgrade to iOS 18

Part 1. Why Can’t I Download iOS 18?

If you can’t update to iOS 18 it could be due to many underlying problems related to network, server, or more such as:

If your device isn’t compatible with iOS 18, you won’t be able to update.
iOS updates need a stable internet connection. If your Wi-Fi is weak or unstable, the update might fail.
Temporary software glitches can cause update errors.
When a new iOS version, like iOS 18, is released, Apple’s servers can get overloaded due to high demand. This can cause errors during installation.

Part 2. How to Fix Cannot Update to iOS 18?

Upgrade to iOS 18 in One-click & Hassle-Free

When iOS 18 won’t download on your iPhone then, you can try a multipurpose tool such as UltFone iOS System Repair. It can not only fix any issue that’s preventing your iPhone from downloading iOS 18 but will also upgrade it to iOS 18 within a single click. Besides, it doesn’t require iTunes or betaprofiles and can download and install iOS 18 quicker than any method. Here are UltFone iOS System Repair’s main features at a glance:

Can both upgrade and downgrade iOS versions including Betas.
Can fix 150+ iOS issues on your iOS device including stuck on white or black screen of death, Apple logo, boot loop, update, etc.
Can factory reset iOS devices to their default settings.
Can fix iTunes errors.
Can erase data completely before giving away or selling your iOS device.
Supports iOS 18 devices and iPhone 15 and earlier.

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Here’s how to use UltFone iOS System Repair to upgrade your iPhone to iOS 18:

Step 1 Download and install UltFone iOS System Repair on your computer (PC or Mac). Once installed, launch the program and connect your iPhone to the computer using a USB cable. In the main window, click on the "iOS Upgrade/Downgrade" option.

Step 2 On the next screen, select the "Upgrade" option to get iOS 18 download.

Step 3 Choose the "Download" button to initiate the process of downloading the iOS 18 beta firmware for your specific iPhone model.

Step 4 After the firmware package is downloaded successfully, the program will prompt you to click "Initiating Upgrade" to begin the installation process.

Step 5 Follow the on-screen instructions, and UltFone iOS System Repair will guide you through the remaining steps to complete iOS 18 developer beta download on your iPhone.

If you don’t want to use software, there are other simple ways that might fix “cannot update to iOS 18” error on your iPhone. However, their effectiveness depends on certain conditions. So, they might not work all time. Here we’ve discussed 5 of them:

2. Check iOS 18 Supported Devices

Your iPhone might not be compatible with latest iOS 18 update, that’s why you can’t download iOS 18. Therefore, you must first know which iPhone models support iOS 18. According to Apple, iPhone 15 to iPhone SE (second generation and later) all support iOS 18. Whereas iPhone SE (1st generation), X, 6, 7, and series are not supported.

3. Restart Your iPhone

Restarting your iPhone can usually solve “iOS 18 not updating” issue, especially if it’s because of temporary glitches, cached data, or apps running in background. A restart will clear up temporary processes and close extra apps. Here’s how to restart your iPhone to fix iOS updating issues:

Step 1: Press and quickly release “Volume Up” button. Then, do same with “Volume Down” button.
Step 2: Next, press and hold “Side” button until Apple logo shows up, then release it.

4. Reset Network Settings

If your iPhone won’t update to iOS 18, it could be because of your current network settings which might be outdated or corrupted. In such a case, you can reset them. Here’s how to do that:

Step 1: Head to “Settings.” Then, pick “General.”
Step 2: Choose “Reset.” After this, tap “Reset Network Settings.”
Step 3: Connect to WiFi again and try to download iOS 18 update again.

5. Make Sure Storage Space Is Enough

Insufficient storage space is also cause of iOS 18 not downloading on your iPhone. Thus, you’ll need to remove unnecessary apps and files to make enough storage for iOS 18 update to download and install. To do so, follow instructions below to remove:

Step 1: Head to “Settings.” Then, pick “General.”
Step 2: Choose “iPhone Storage” to see which apps use most space. Delete or offload unused apps by tapping them and selecting “Delete App.”
Step 3: You can also remove large videos and clear Safari history and data. To do so head to “Settings.” Pick “Safari.” Then, choose “Clear History and Website Data.”

6. Use iTunes/Finder to Upgrade to iOS 18

If you’re still unable to fix “iOS 18 unable to check for update” error, use iTunes/Finder to upgrade your iPhone to iOS 18. You’ll need a computer with current version of iTunes/Finder installed to use this method. Follow instructions below:

Step 1: Run iTunes on computer. Then, connect your iPhone to same PC.
Step 2: Choose your iPhone on iTunes. Then, press “Shift” on Windows and “Option” on Mac, and at same time tap “Check for Updates.”

Conclusion

If your iPhone cannot update to iOS 18, it could be due to network issues, low storage, or incompatibility. While basic fixes like restarting, resetting network settings, or using iTunes/Finder to upgrade can often fix “updating” issues they might not always work.

The problem might be with your iPhone’s software. Therefore, for a solution that’s both easier and offers high success, try UltFone iOS System Repair It can fix 150+ iOS issues, including not being able to update to latest iOS, and can also upgrade/downgrade iOS 18 quickly.