iOS Error Codes

Comprehensive solutions for all iPhone, iPad, and iPod touch update and restore error codes.

Try These Steps First

Update your computer software. Make sure your Mac runs macOS Catalina 10.15 or later (older Macs need the latest iTunes), or that your Windows PC has the latest iTunes or Apple Devices app.
Note the exact error. If you see "An unknown error occurred [error number]", write down the number and search for it below.
Find your code in the categories. Still stuck? Browse the categories for your error and follow its page step by step.

Browse by Category

General Errors Hardware Issues USB Connection Issues Server Connectivity Issues Security Software Issues Software Modification Issues Device Disconnection Issues Cellular Issues Apple Pay Issues

Error Code Quick Access

1 2 3 4 6 9 10 11 12 13 14 16 17 20 21 23 26 27 28 29 34 35 36 37 40 53 56 1002 1004 1011 1012 1014 1015 1600 1601 1602 1603 1604 1611 1638 1643 1644 1645 1646 1647 1648 1649 1650 1667 1669 1671 2000 2001 2002 2005 2006 2009 3000 3002 3004 3013 3014 3015 3194 3200 4005 4013 4014 4037

General Errors

macOS/iTunes Version Too Old

This error occurs when your iOS device has a newer version of iOS than is supported by your computer. You need to update your computer software first.

Error 14 medium

Update/Restore Failed

This is a general error that occurs when the update or restore process cannot be completed successfully.

Download in Progress

This error indicates that your computer is downloading necessary software and you need to wait for the download to complete.

Device Passcode Locked

This error occurs when your computer is unable to update your device because it is passcode locked and the device was not unlocked for the update or restore process.

The Device Isn't Eligible for the Requested Build

This error occurs when you are trying to install an iOS version that is not compatible with your device or is no longer being signed by Apple.

Hardware Issues

Hardware Issue Detected

This error indicates a potential hardware issue with your iOS device that is preventing the update or restore process from completing successfully.

Hardware Issue Detected

This error indicates a potential hardware issue with your iOS device that is preventing the update or restore process from completing successfully.

Hardware Issue Detected

This error indicates a potential hardware issue with your iOS device that is preventing the update or restore process from completing successfully.

Hardware Issue Detected

This error indicates a potential hardware issue with your iOS device that is preventing the update or restore process from completing successfully.

Hardware Issue Detected

This error indicates a potential hardware issue with your iOS device that is preventing the update or restore process from completing successfully.

Hardware Issue Detected

This error indicates a potential hardware issue with your iOS device that is preventing the update or restore process from completing successfully.

Hardware Issue Detected

This error indicates a potential hardware issue with your iOS device that is preventing the update or restore process from completing successfully.

Hardware Issue Detected

This error indicates a potential hardware issue with your iOS device that is preventing the update or restore process from completing successfully.

Hardware Issue Detected

This error indicates a potential hardware issue with your iOS device that is preventing the update or restore process from completing successfully.

Hardware Issue Detected

This error indicates a potential hardware issue with your iOS device that is preventing the update or restore process from completing successfully.

Hardware Issue Detected

This error indicates a potential hardware issue with your iOS device that is preventing the update or restore process from completing successfully.

Hardware Issue Detected

This error indicates a potential hardware issue with your iOS device that is preventing the update or restore process from completing successfully.

Hardware Issue Detected

This error indicates a potential hardware issue with your iOS device that is preventing the update or restore process from completing successfully.

Hardware Issue Detected

This error indicates a potential hardware issue with your iOS device that is preventing the update or restore process from completing successfully.

Hardware Issue Detected

This error indicates a potential hardware issue with your iOS device that is preventing the update or restore process from completing successfully.

Hardware Issue Detected

This error indicates a potential hardware issue with your iOS device that is preventing the update or restore process from completing successfully.

Hardware Issue Detected

This error indicates a potential hardware issue with your iOS device that is preventing the update or restore process from completing successfully.

Error 53 critical

Touch ID Security Feature

This error appears when a device fails a security test related to Touch ID. This typically happens after an unauthorized repair or when Touch ID hardware has been modified or damaged.

Hardware Issue Detected

This error indicates a potential hardware issue with your iOS device that is preventing the update or restore process from completing successfully.

Error 1002 high

Hardware Issue Detected

This error indicates a potential hardware issue with your iOS device that is preventing the update or restore process from completing successfully.

Error 1004 high

Hardware Issue Detected

This error indicates a potential hardware issue with your iOS device that is preventing the update or restore process from completing successfully.

Error 1011 high

Hardware Issue Detected

This error indicates a potential hardware issue with your iOS device that is preventing the update or restore process from completing successfully.

Error 1012 high

Hardware Issue Detected

This error indicates a potential hardware issue with your iOS device that is preventing the update or restore process from completing successfully.

Error 1014 high

Hardware Issue Detected

This error indicates a potential hardware issue with your iOS device that is preventing the update or restore process from completing successfully.

Error 1667 high

Hardware Issue Detected

This error indicates a potential hardware issue with your iOS device that is preventing the update or restore process from completing successfully.

Error 1669 high

Hardware Issue Detected

This error indicates a potential hardware issue with your iOS device that is preventing the update or restore process from completing successfully.

USB Connection Issues

Error 13 medium

USB Connection Issue

This error indicates a problem with the USB connection between your device and computer. The connection may be unstable or the cable may be faulty.

Error 1600 medium

USB Connection Issue

This error indicates a problem with the USB connection between your device and computer during the restore process.

Error 1601 medium

USB Connection Issue

This error indicates a problem with the USB connection between your device and computer during the restore process.

Error 1602 medium

USB Connection Issue

This error indicates a problem with the USB connection between your device and computer during the restore process.

Error 1603 medium

USB Connection Issue

This error indicates a problem with the USB connection between your device and computer during the restore process.

Error 1604 medium

USB Connection Issue

This error indicates a problem with the USB connection between your device and computer during the restore process.

Error 1643 medium

USB Connection Issue

This error indicates a problem with the USB connection between your device and computer during the restore process.

Error 1644 medium

USB Connection Issue

This error indicates a problem with the USB connection between your device and computer during the restore process.

Error 1645 medium

USB Connection Issue

This error indicates a problem with the USB connection between your device and computer during the restore process.

Error 1646 medium

USB Connection Issue

This error indicates a problem with the USB connection between your device and computer during the restore process.

Error 1647 medium

USB Connection Issue

This error indicates a problem with the USB connection between your device and computer during the restore process.

Error 1648 medium

USB Connection Issue

This error indicates a problem with the USB connection between your device and computer during the restore process.

Error 1649 medium

USB Connection Issue

This error indicates a problem with the USB connection between your device and computer during the restore process.

Error 1650 medium

USB Connection Issue

This error indicates a problem with the USB connection between your device and computer during the restore process.

Error 2000 medium

USB Connection Issue

This error indicates a problem with the USB connection between your device and computer during the restore process.

Error 2001 medium

USB Connection Issue

This error indicates a problem with the USB connection between your device and computer during the restore process.

Error 2002 medium

USB Connection Issue

This error indicates a problem with the USB connection between your device and computer during the restore process.

Error 2005 medium

USB Connection Issue

This error indicates a problem with the USB connection between your device and computer during the restore process.

Error 2006 medium

USB Connection Issue

This error indicates a problem with the USB connection between your device and computer during the restore process.

Error 2009 medium

USB Connection Issue

This error indicates a problem with the USB connection between your device and computer during the restore process.

Invalid Response Error

This error appears when your device sends an unexpected response during the update or restore process, often indicating a USB communication issue.

Server Connectivity Issues

Error 17 medium

Apple Server Connection Issue

This error occurs when your computer cannot connect to Apple's software update servers, preventing the download of necessary firmware.

Error 1638 medium

Apple Server Connection Issue

This error occurs when your computer cannot connect to Apple's software update servers, preventing the download of necessary firmware.

Error 3000 medium

Apple Server Connection Issue

This error occurs when your computer cannot connect to Apple's software update servers, preventing the download of necessary firmware.

Error 3002 medium

Apple Server Connection Issue

This error occurs when your computer cannot connect to Apple's software update servers, preventing the download of necessary firmware.

Error 3004 medium

Apple Server Connection Issue

This error occurs when your computer cannot connect to Apple's software update servers, preventing the download of necessary firmware.

Error 3013 medium

Apple Server Connection Issue

This error occurs when your computer cannot connect to Apple's software update servers, preventing the download of necessary firmware.

Error 3014 medium

Apple Server Connection Issue

This error occurs when your computer cannot connect to Apple's software update servers, preventing the download of necessary firmware.

Error 3015 medium

Apple Server Connection Issue

This error occurs when your computer cannot connect to Apple's software update servers, preventing the download of necessary firmware.

Error 3194 medium

Apple Server Connection Issue

This error occurs when your computer cannot connect to Apple's software update servers, preventing the download of necessary firmware.

Error 3200 medium

Apple Server Connection Issue

This error occurs when your computer cannot connect to Apple's software update servers, preventing the download of necessary firmware.

There Was a Problem Downloading the Software

This error message appears when your computer is unable to download the iOS firmware required for the update or restore process.

Security Software Issues

Security Software Blocking Connection

This error occurs when third-party security software on your computer is preventing iTunes/Finder from communicating with your iOS device.

Security Software Blocking Connection

This error occurs when third-party security software on your computer is preventing iTunes/Finder from communicating with your iOS device.

Security Software Blocking Connection

This error occurs when third-party security software on your computer is preventing iTunes/Finder from communicating with your iOS device.

Error 1611 medium

Security Software/USB Issue

This error can be caused by third-party security software interfering with the connection or by USB connection issues.

Software Modification Issues

Error 1015 high

Unauthorized Software Modification

This error occurs when your device has unauthorized software modifications (jailbreaking) or when you are trying to install an earlier version of iOS (downgrading).

The Required Resource Can't Be Found

This error occurs when the required firmware file or resource cannot be found, often due to jailbreaking or attempting to downgrade iOS.

Device Disconnection Issues

Try Updating Your Device Again

Apple's current guidance for this error is to simply try the update or restore again. It can occur when the device loses communication with the computer mid-process, or when third-party security software interferes with the connection.

Error 4005 high

Device Disconnected During Restore

This error appears when your device disconnects during the update or restore process, or when iTunes/Finder cannot tell the device to restore.

Error 4013 high

Device Disconnected During Restore

This error appears when your device disconnects during the update or restore process, or when iTunes/Finder cannot tell the device to restore.

Error 4014 high

Device Disconnected During Restore

This error appears when your device disconnects during the update or restore process, or when iTunes/Finder cannot tell the device to restore.

Cellular Issues

Cellular Update Failed

This alert appears after an iOS update when there is an issue with the cellular modem firmware or configuration on your device. Apple's official fix is to reinstall the current version of iOS from a computer.

Apple Pay Issues

Apple Pay Not Available on This iPhone

This alert appears after an iOS update when there is an issue with the NFC or Secure Element hardware/software that powers Apple Pay. Apple's official fix is the same reinstall flow used for "Cellular Update Failed".

Still Can't Find Your Error?

If you can't find the specific error code you're looking for, try our general troubleshooting guides or contact Apple Support for assistance.

General Troubleshooting Force Restart Guide Recovery Mode Guide