Apple iPhone Error Code 45: How to Fix It

Medium 30-60 minutes High Severity Verified June 2026
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Error Code
45
Brand
Apple iPhone
Product Type
mobile
Severity
High
DIY Difficulty
Medium
Estimated Fix Time
30-60 minutes
iTunes Error 45 occurs when your iPhone tries to restore an iOS version that is no longer signed by Apple. This usually happens during downgrades or restoring to an older iOS version. The error prevents the restore process, leaving your device potentially stuck in recovery mode.
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Tools You'll Need

How to Fix Error Code 45

  1. Check Apple's signing window

  2. Download the correct IPSW file

  3. Put iPhone into recovery mode

    Do not disconnect the cable during this process.

  4. Restore using iTunes/Finder with the correct IPSW

    This erases all data on your iPhone. Ensure you have a backup.

  5. Check USB connection and drivers

  6. Disable security software temporarily

    Re-enable security software after the restore.
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When to Call a Professional

If the error continues after trying different cables, ports, and the latest signed iOS, your iPhone may have a hardware issue (e.g., NAND or baseband failure). Contact Apple Support or visit an Apple Store.

Frequently Asked Questions

What does iPhone Error 45 mean?
iTunes Error 45 means the iOS version you are trying to restore is no longer signed by Apple, so the restore cannot complete.
How do I fix iPhone Error 45?
Download the latest signed iOS version from a site like ipsw.me, put your iPhone into recovery mode, and restore it using iTunes or Finder with the correct IPSW file.
Will I lose data fixing iPhone Error 45?
Yes, restoring your iPhone erases all data. Make sure you have a backup before starting.
Can I downgrade to fix Error 45?
No, downgrading is not possible if the older iOS version is no longer signed. You must restore to the latest signed version.
Why does Apple stop signing older iOS versions?
Apple stops signing older versions to encourage users to stay on the latest, most secure software, preventing downgrades that may have security vulnerabilities.

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