Apple iPhone Error Code 20: How to Fix It

Medium 15-45 minutes Medium Severity Verified June 2026
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Error Code
20
Brand
Apple iPhone
Product Type
mobile
Severity
Medium
DIY Difficulty
Medium
Estimated Fix Time
15-45 minutes
Error code 20 appears in iTunes when your iPhone is in an unexpected restore state during a software update or restore. This typically indicates a hardware or software glitch that prevents the process from completing. Use these steps to resolve the issue and get your device working again.
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Tools You'll Need

How to Fix Error Code 20

  1. Force Restart Your iPhone

  2. Check USB Connection and Cable

  3. Update iTunes or Finder

  4. Put iPhone into DFU Mode and Restore

    This will erase all data on your iPhone. Ensure you have a backup if possible.

  5. Use a Different Computer

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When to Call a Professional

If none of the above steps work and the device remains in a restore loop or does not respond, contact Apple Support or visit an Apple Store. The issue may indicate a hardware fault that requires professional repair.

Frequently Asked Questions

What causes iTunes error 20 on iPhone?
Error 20 usually occurs due to USB connection issues, outdated software, or a corrupted iOS update. It can also indicate a hardware problem with the baseband or other components.
Will error 20 erase my data?
The restore process required to fix error 20 will erase all data on your iPhone. If you have a recent iCloud or iTunes backup, you can restore your data afterward.
Can I fix iPhone error 20 without a computer?
No, you need a computer with iTunes or Finder to perform a restore. However, you can try a force restart first without a computer to see if it resolves the issue.
Is error 20 common on newer iPhones?
Error 20 can occur on any iPhone model running iOS. It is less frequent on newer models but can still happen during a software update or restore.
How do I put my iPhone into DFU mode?
For iPhone 8 or later: Press and release Volume Up, then Volume Down, then hold the Side button until the screen goes black. While holding Side, also press and hold Volume Down for 5 seconds, then release Side but keep holding Volume Down for 10 more seconds. The screen will remain black if successful.

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