[Quickly Fix] Unable to Verify Update iOS 18/18.4? Best Solutions Here!

Part 1. Why does Unable to Verify Update iOS 18/18.4?

The "Unable to Verify Update" error while trying to install the iOS 18/18.4 can occur due to several reasons:

• Server Issues: Apple's servers may be overwhelmed with a large number of users attempting to download the at the same time, leading to temporary failures.
• Software Glitches: Bugs or compatibility issues in the software itself or your iPhone's current iOS version can sometimes cause verification problems.
• Insufficient Storage Space: If your iPhone doesn't have enough free storage space, the update process may fail during verification.
• Internet Connection Problems: A slow, unstable, or interrupted internet connection can disrupt the verification process and cause the error.
• Date and Time Settings: Incorrect date and time settings on your iPhone can interfere with the verification process and trigger the error.

These are some of the common reasons that can lead to the "Unable to Verify Update" error when attempting to install the iOS 18/18.4 on your iPhone.

Part 2. [Recommended] How to Fix Unable to Verify Update iOS 18/18.4?

If you're facing the "Unable to Verify Update" error while attempting to install the iOS 18/18.4, a reliable and effective solution is to use Tenorshare ReiBoot, a powerful iOS system recovery tool designed to resolve various iOS issues, including update and installation errors.

Tenorshare ReiBoot is a comprehensive and user-friendly software that offers a range of features to help you fix iOS-related problems without data loss. Here are some of its advantages and main features that make it an excellent choice for resolving the "unable to verify security response" error:

• One-Click Entry and Exit from Recovery Mode: ReiBoot simplifies the process of entering and exiting Recovery Mode on your iOS device with just a single click, ensuring a smooth and hassle-free experience.
• Repair iOS System Issues: ReiBoot can repair over 150 different iOS system issues, including stuck on the Apple logo, black screen of death, and update verification failures, without causing any data loss.
• Support for Latest iOS Versions ands: ReiBoot is compatible with the latest iOS versions, including iOS 18/18.4, allowing you to upgrade or downgrade your device without any compatibility issues.

Here is how to solve iOS 18/18.4 unable to verify update error:

• Download and install Tenorshare ReiBoot on your computer (compatible with both Windows PC and Mac). Launch the program and connect your iPhone to your computer using a lightning cable.

  

• In the ReiBoot interface, select the "Standard Repair" option and click on the "Standard Repair" button to proceed.

  

• ReiBoot will prompt you to download the latest firmware package for your iPhone. Click on the "Download" button to initiate the download process.

  

• Once the firmware download is complete, ReiBoot will automatically proceed to the next step. Click on the "Start Standard Repair" button to begin the repair process.

  

  The standard repair process may take several minutes to complete. A progress bar will appear, indicating the repair status. Please be patient and wait until the progress bar reaches 100%.

  

Part 3. 3 Common Ways - How to Fix Unable to Verify Update iOS 18/18.4

3.1 Check the Apple System Status

This method involves checking if there are any issues with Apple's servers, which could be causing the "iPhone can't verify update" error. Here is how to check:

• Visit the Apple System Status website.
• Check if there are any reported issues with iOS Software Updates or other relevant services.
• If there are ongoing issues, wait until Apple resolves them before attempting the update again.

3.2 Reset Network Settings

Resetting network settings can help resolve any network-related issues that might be causing the verification error saying iOS 18/18.4 failed verification because you are no longer connected to the internet.

• Go to Settings > General > Transfer or Reset iPhone > Reset.
• Select "Reset Network Settings" and confirm your action.
• After resetting, reconnect to your Wi-Fi network and try updating again.

3.3 Force Restart iPhone

A force restart can sometimes fix minor software glitches that may be causing the "unable to verify app iOS 18/18.4" error.

• Press and quickly release the Volume Up button, then the Volume Down button.
• Press and hold the Side button until the Apple logo appears.
• Once your iPhone restarts, try installing the iOS 18/18.4 again.

3.4 Delete the Update File and Try Again

If the update file itself is corrupted, deleting it and re-downloading can resolve the issue of “iPhone 11 unable to verify update”.

• Go to Settings > General > iPhone Storage.
• Look for the iOS 18/18.4 update file and delete it.
• Go back to Software Update and attempt to download and install the update again.

3.5 Clean Storage Space

If your iPhone doesn't have enough free storage space, the update process may fail during verification. Freeing up space can resolve this issue.

• Go to Settings > General > iPhone Storage.
• Identify and delete unused apps, media files, or other data to free up space.
• Ensure you have at least a few gigabytes of free space before attempting the update again.

3.6 Update iOS 17 through iTunes

Using iTunes or Finder on a computer can sometimes bypass the verification issue when updating your iPhone.

• Connect your iPhone to your computer and open iTunes/Finder.
• Select your device and navigate to the Summary/General tab.
• Click "Check for Update" and follow the prompts to download and install the iOS 18/18.4.

3.7 Enable Automatic Updates in Settings

Allowing automatic updates can help avoid verification issues when a new update is available. Here is how you can do it:

• Go to Settings > General > Software Update.
• Toggle on "Automatic Updates" and "Download iOS Updates."
• Your iPhone will now automatically download and verify future updates.

3.8 Check Date & Time

Incorrect date and time settings can interfere with the verification process and cause the error. Here is how to do it:

• Go to Settings > General > Date & Time.
• Toggle on "Set Automatically" to sync with Apple's time servers.
• Once the date and time are corrected, try updating to iOS 18/18.4 again.

Final Word

Updating to the latest iOS 18/18.4 can be an exciting experience, allowing you to explore new features and improvements firsthand. However, encountering the "Unable to Verify Update" error can be frustrating and hinder your ability to enjoy the new software.

Fortunately, with the methods outlined in this comprehensive guide, you now have a range of effective solutions at your disposal.

Whether it's utilizing the powerful Tenorshare ReiBoot tool, resetting network settings, force restarting your iPhone, or trying alternative methods like updating through iTunes/Finder or enabling automatic updates, you have multiple options to overcome this verification issue.