Apple iPhone Error Code 1015: How to Fix It

Easy 30-60 minutes Low Severity Verified June 2026
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Error Code
1015
Brand
Apple iPhone
Product Type
mobile
Severity
Low
DIY Difficulty
Easy
Estimated Fix Time
30-60 minutes
iPhone error code 1015 appears in iTunes when you try to downgrade to an older iOS version that Apple is no longer digitally signing. This prevents unauthorized firmware installations but can be frustrating if you need to restore your device.
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Tools You'll Need

How to Fix Error Code 1015

  1. Check Current iOS Signing Status

  2. Update to Latest iOS Version

    Back up your iPhone data before proceeding as this process may erase some settings.

  3. Use DFU Mode for Stubborn Cases

    DFU mode will completely erase your device. Ensure you have a recent backup.

  4. Restore with Latest Firmware

  5. Reset Network Settings

    You'll need to re-enter WiFi passwords after this reset.
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When to Call a Professional

Contact Apple Support or visit an Apple Store if your iPhone remains stuck in recovery mode after multiple restore attempts, shows hardware error messages, or if you suspect water damage or physical hardware failure.

Frequently Asked Questions

Why does iTunes error 1015 happen?
Error 1015 occurs when you try to install an iOS version that Apple is no longer digitally signing. Apple only signs the latest iOS versions and occasionally one previous version for security reasons.
Can I bypass error 1015 to downgrade iOS?
For most users, no. Apple's signing process is a security feature that cannot be bypassed without jailbreaking or special tools that may void your warranty and pose security risks.
Will fixing error 1015 erase my iPhone data?
Using the Update option usually preserves data, but DFU mode restore will completely erase your device. Always back up your iPhone before attempting any firmware restoration.
What's the difference between restore and update in iTunes?
Update installs the latest iOS while preserving your data and settings. Restore completely erases the device and installs a fresh iOS version, requiring you to set up the phone as new or from backup.
How long does Apple sign iOS versions?
Apple typically stops signing older iOS versions within 1-2 weeks after releasing a new version. This prevents users from downgrading to potentially vulnerable firmware versions.

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