iOS Error Codes

Error 1 High

Hardware Issue Detected

Potential hardware issue preventing update or restore.

Error 2 Medium

Security Software Blocking

Third-party security software on your computer is preventing iTunes or Finder from communicating wit…

Error 3 High

Hardware Issue Detected

Error 3 indicates a potential hardware issue, often related to baseband or logic board problems.

Error 4 Medium

Security Software Blocking

Antivirus or firewall software is blocking communication between your computer and iOS device.

Error 6 Medium

Security Software Blocking

Security software is interfering with the restore process. Temporarily disabling antivirus often res…

Error 9 High

Device Disconnected During Update

Device disconnected during update or restore process.

Error 10 Low

macOS/iTunes Version Too Old

Your computer's operating system or iTunes is too old to support the iOS version on your device. Upd…

Error 11 High

Hardware Issue Detected

Error 11 indicates a hardware issue preventing the restore from completing, often related to storage…

Error 12 High

Hardware Issue Detected

Hardware error occurring when the device fails to communicate during the restore process.

Error 13 Medium

USB Connection Issue

Problem with the USB connection. The connection may be unstable or the cable may be faulty.

Error 14 Medium

Update/Restore Failed

General error when update or restore cannot complete.

Error 16 High

Hardware Issue Detected

Typically indicates a hardware issue related to the device's storage or memory components.

Error 17 Medium

Apple Server Connection

Your computer cannot connect to Apple's software update servers. May be due to network issues, firew…

Error 20 High

Hardware Issue Detected

Often related to the device's baseband processor or cellular modem.

Error 21 High

Hardware Issue Detected

Hardware error occurring during the restore process when communication with the device fails.

Error 23 High

Hardware Issue Detected

Often related to the device's storage or bootloader.

Error 26 High

Hardware Issue Detected

Indicates a hardware issue with the device's internal components.

Error 27 High

Hardware Issue Detected

Hardware error during restore.

Error 28 High

Hardware Issue Detected

Often related to the device's power management system.

Error 29 High

Hardware Issue Detected

Typically indicates a hardware issue with the device's battery or power circuits.

Error 34 High

Hardware Issue Detected

Often related to the device's communication chips.

Error 35 High

Hardware Issue Detected

Hardware error during the restore process.

Error 36 High

Hardware Issue Detected

Indicates a hardware issue with the device's internal storage.

Error 37 High

Hardware Issue Detected

Typically indicates a hardware issue with the device's logic board.

Error 40 High

Hardware Issue Detected

Often related to the device's communication protocols.

Error 53 Critical

Touch ID Security Feature

Device fails security test related to Touch ID after unauthorized repair.

Error 56 High

Hardware Issue Detected

Often related to the device's network components.

Error 1015 High

Unauthorised Modification

Device has been jailbroken or you're attempting to install an unsigned iOS version.

Error 1600 Medium

USB Connection Issue

Error 1600 indicates a problem with the USB connection during restore. Caused by faulty cables, dama…

Error 1601 Medium

USB Connection Issue

Error 1601 indicates a problem with the USB connection during restore. Caused by faulty cables, dama…

Error 1602 Medium

USB Connection Issue

Error 1602 indicates a problem with the USB connection during restore. Caused by faulty cables, dama…

Error 1603 Medium

USB Connection Issue

Error 1603 indicates a problem with the USB connection during restore. Caused by faulty cables, dama…

Error 1604 Medium

USB Connection Issue

Error 1604 indicates a problem with the USB connection during restore. Caused by faulty cables, dama…

Error 1605 Medium

USB Connection Issue

Error 1605 indicates a problem with the USB connection during restore. Caused by faulty cables, dama…

Error 1606 Medium

USB Connection Issue

Error 1606 indicates a problem with the USB connection during restore. Caused by faulty cables, dama…

Error 1607 Medium

USB Connection Issue

Error 1607 indicates a problem with the USB connection during restore. Caused by faulty cables, dama…

Error 1608 Medium

USB Connection Issue

Error 1608 indicates a problem with the USB connection during restore. Caused by faulty cables, dama…

Error 1609 Medium

USB Connection Issue

Error 1609 indicates a problem with the USB connection during restore. Caused by faulty cables, dama…

Error 1610 Medium

USB Connection Issue

Error 1610 indicates a problem with the USB connection during restore. Caused by faulty cables, dama…

Error 1611 Medium

USB Connection Issue

Error 1611 indicates a problem with the USB connection during restore. Caused by faulty cables, dama…

Error 1612 Medium

USB Connection Issue

Error 1612 indicates a problem with the USB connection during restore. Caused by faulty cables, dama…

Error 1613 Medium

USB Connection Issue

Error 1613 indicates a problem with the USB connection during restore. Caused by faulty cables, dama…

Error 1614 Medium

USB Connection Issue

Error 1614 indicates a problem with the USB connection during restore. Caused by faulty cables, dama…

Error 1615 Medium

USB Connection Issue

Error 1615 indicates a problem with the USB connection during restore. Caused by faulty cables, dama…

Error 1616 Medium

USB Connection Issue

Error 1616 indicates a problem with the USB connection during restore. Caused by faulty cables, dama…

Error 1617 Medium

USB Connection Issue

Error 1617 indicates a problem with the USB connection during restore. Caused by faulty cables, dama…

Error 1618 Medium

USB Connection Issue

Error 1618 indicates a problem with the USB connection during restore. Caused by faulty cables, dama…

Error 1619 Medium

USB Connection Issue

Error 1619 indicates a problem with the USB connection during restore. Caused by faulty cables, dama…

Error 1620 Medium

USB Connection Issue

Error 1620 indicates a problem with the USB connection during restore. Caused by faulty cables, dama…

Error 1621 Medium

USB Connection Issue

Error 1621 indicates a problem with the USB connection during restore. Caused by faulty cables, dama…

Error 1622 Medium

USB Connection Issue

Error 1622 indicates a problem with the USB connection during restore. Caused by faulty cables, dama…

Error 1623 Medium

USB Connection Issue

Error 1623 indicates a problem with the USB connection during restore. Caused by faulty cables, dama…

Error 1624 Medium

USB Connection Issue

Error 1624 indicates a problem with the USB connection during restore. Caused by faulty cables, dama…

Error 1625 Medium

USB Connection Issue

Error 1625 indicates a problem with the USB connection during restore. Caused by faulty cables, dama…

Error 1626 Medium

USB Connection Issue

Error 1626 indicates a problem with the USB connection during restore. Caused by faulty cables, dama…

Error 1627 Medium

USB Connection Issue

Error 1627 indicates a problem with the USB connection during restore. Caused by faulty cables, dama…

Error 1628 Medium

USB Connection Issue

Error 1628 indicates a problem with the USB connection during restore. Caused by faulty cables, dama…

Error 1629 Medium

USB Connection Issue

Error 1629 indicates a problem with the USB connection during restore. Caused by faulty cables, dama…

Error 1630 Medium

USB Connection Issue

Error 1630 indicates a problem with the USB connection during restore. Caused by faulty cables, dama…

Error 1631 Medium

USB Connection Issue

Error 1631 indicates a problem with the USB connection during restore. Caused by faulty cables, dama…

Error 1632 Medium

USB Connection Issue

Error 1632 indicates a problem with the USB connection during restore. Caused by faulty cables, dama…

Error 1633 Medium

USB Connection Issue

Error 1633 indicates a problem with the USB connection during restore. Caused by faulty cables, dama…

Error 1634 Medium

USB Connection Issue

Error 1634 indicates a problem with the USB connection during restore. Caused by faulty cables, dama…

Error 1635 Medium

USB Connection Issue

Error 1635 indicates a problem with the USB connection during restore. Caused by faulty cables, dama…

Error 1636 Medium

USB Connection Issue

Error 1636 indicates a problem with the USB connection during restore. Caused by faulty cables, dama…

Error 1637 Medium

USB Connection Issue

Error 1637 indicates a problem with the USB connection during restore. Caused by faulty cables, dama…

Error 1638 Medium

USB Connection Issue

Error 1638 indicates a problem with the USB connection during restore. Caused by faulty cables, dama…

Error 1639 Medium

USB Connection Issue

Error 1639 indicates a problem with the USB connection during restore. Caused by faulty cables, dama…

Error 1640 Medium

USB Connection Issue

Error 1640 indicates a problem with the USB connection during restore. Caused by faulty cables, dama…

Error 1641 Medium

USB Connection Issue

Error 1641 indicates a problem with the USB connection during restore. Caused by faulty cables, dama…

Error 1642 Medium

USB Connection Issue

Error 1642 indicates a problem with the USB connection during restore. Caused by faulty cables, dama…

Error 1643 Medium

USB Connection Issue

Error 1643 indicates a problem with the USB connection during restore. Caused by faulty cables, dama…

Error 1644 Medium

USB Connection Issue

Error 1644 indicates a problem with the USB connection during restore. Caused by faulty cables, dama…

Error 1645 Medium

USB Connection Issue

Error 1645 indicates a problem with the USB connection during restore. Caused by faulty cables, dama…

Error 1646 Medium

USB Connection Issue

Error 1646 indicates a problem with the USB connection during restore. Caused by faulty cables, dama…

Error 1647 Medium

USB Connection Issue

Error 1647 indicates a problem with the USB connection during restore. Caused by faulty cables, dama…

Error 1648 Medium

USB Connection Issue

Error 1648 indicates a problem with the USB connection during restore. Caused by faulty cables, dama…

Error 1649 Medium

USB Connection Issue

Error 1649 indicates a problem with the USB connection during restore. Caused by faulty cables, dama…

Error 1650 Medium

USB Connection Issue

Error 1650 indicates a problem with the USB connection during restore. Caused by faulty cables, dama…

Error 1671 Low

Download In Progress

Not actually an error — your computer is still downloading software. Wait for the download to comple…

Error 3000 Medium

Apple Server Connection

Error 3000 occurs when your computer cannot connect to Apple's software update servers. Check your i…

Error 3002 Medium

Apple Server Connection

Error 3002 occurs when your computer cannot connect to Apple's software update servers. Check your i…

Error 3004 Medium

Apple Server Connection

Error 3004 occurs when your computer cannot connect to Apple's software update servers. Check your i…

Error 3013 Medium

Apple Server Connection

Error 3013 occurs when your computer cannot connect to Apple's software update servers. Check your i…

Error 3014 Medium

Apple Server Connection

Error 3014 occurs when your computer cannot connect to Apple's software update servers. Check your i…

Error 3015 Medium

Apple Server Connection

Error 3015 occurs when your computer cannot connect to Apple's software update servers. Check your i…

Error 3194 Medium

Apple Server Connection Issue

Attempting to install an iOS version no longer signed by Apple.

Error 3200 Medium

Apple Server Connection

Connection issue with Apple's software update servers. Usually temporary — try again after a few min…

Error 4005 High

Device Disconnected

Connection lost during restore. Can be due to cable issues, port problems, or device hardware failur…

Error 4013 High

Device Disconnected During Restore

Connection lost between device and computer during restore.

Error 4014 High

Device Disconnected

Similar to Error 4013. Connection was lost during restore, often related to baseband issues.

Error 4037 Low

Device Passcode Locked

Device is passcode locked during an update or restore. Unlock your device and trust the computer bef…