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General Errors Low Severity
Error 4037: 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.
Before You Begin
- • On Mac with macOS Catalina 10.15 or later: Ensure your Mac is up to date
- • On Mac with macOS Mojave 10.14 or earlier: Ensure you have the latest version of iTunes
- • On PC: Ensure you have the latest version of iTunes or the Apple Devices app
Common Causes
- 1 Device is passcode locked
- 2 Device was not unlocked before connecting to computer
- 3 Device locked during the update process
- 4 Trust This Computer prompt was not accepted
How to Fix Error 4037
1
Unlock Your Device
Unlock your device using your passcode.
2
Trust This Computer
If prompted, tap "Trust This Computer" on your device.
3
Try Again
After unlocking, try the update or restore process again.
4
Forgot Passcode?
If you forgot your passcode, you will need to put your device in recovery mode and restore it, which will erase all data.
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Still Need Help?
If you've tried all the steps above and still can't resolve the issue, you may need to contact Apple Support or visit an Apple Store. You can also compare your case against Apple's official iOS update and restore errors page.