Facing "Update Error while installing iOS 18" issue on iPhone 11 Pro Max

Unable to install update an error occurred installed iOS 18


[Re-Titled by Moderator]

iPhone 11 Pro Max

Posted on Oct 2, 2024 12:44 PM

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Question marked as Top-ranking reply

Posted on Oct 2, 2024 11:28 PM

Make sure that your iPhone is setup to meet the following requirements before you attempt to update the iOS version over a Wi-Fi Network. Open Settings ➡️ General ➡️ Software Update: If there is an update available for your iPhone then it will be listed here. Follow the on-screen instructions to download and update your iPhone. 

  • Your iPhone must have a fast Wi-Fi connection or a 5G cellular connection. You cannot update over a cellular hotspot
  • Ensure that you do not have a beta updates activated in Settings ➡️ General ➡️ Software Update
  • The iPhone can not be in Low Power mode
  • The battery state of charge must be above 50%
  • Your iPhone must have at least 20GB or more free storage space
  • Your iPhone cannot be connected through VPN
  • You should leave the phone plugged in until it finishes updating, both to assure that it remains above 50% and to keep Wi-Fi enabled (Wi-Fi turns off when the phone sleeps if not connected to power).


Axel F.

2 replies
Question marked as Top-ranking reply

Oct 2, 2024 11:28 PM in response to Caleb1990

Make sure that your iPhone is setup to meet the following requirements before you attempt to update the iOS version over a Wi-Fi Network. Open Settings ➡️ General ➡️ Software Update: If there is an update available for your iPhone then it will be listed here. Follow the on-screen instructions to download and update your iPhone. 

  • Your iPhone must have a fast Wi-Fi connection or a 5G cellular connection. You cannot update over a cellular hotspot
  • Ensure that you do not have a beta updates activated in Settings ➡️ General ➡️ Software Update
  • The iPhone can not be in Low Power mode
  • The battery state of charge must be above 50%
  • Your iPhone must have at least 20GB or more free storage space
  • Your iPhone cannot be connected through VPN
  • You should leave the phone plugged in until it finishes updating, both to assure that it remains above 50% and to keep Wi-Fi enabled (Wi-Fi turns off when the phone sleeps if not connected to power).


Axel F.

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Facing "Update Error while installing iOS 18" issue on iPhone 11 Pro Max

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