iPhone Error Code 1671: How to Fix It

Easy 30 minutes to 2 hours Low Severity Verified June 2026
Error Code
Error 1671
Brand
iPhone
Product Type
mobile
Severity
Low
DIY Difficulty
Easy
Estimated Fix Time
30 minutes to 2 hours
iPhone Error 1671 occurs when iTunes is downloading software for your device and needs time to complete the process. This error typically appears during iOS updates or restores and usually resolves itself once the download finishes.
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Tools You'll Need

How to Fix Error Code Error 1671

  1. Wait for Download Completion

    Do not force quit iTunes or disconnect your iPhone while the download is in progress, as this can corrupt the update file
  2. Check Internet Connection

  3. Restart iTunes if Stuck

    Only restart iTunes if the progress bar hasn't moved for over 2 hours
  4. Update iTunes to Latest Version

  5. Clear iTunes Cache

    Back up your iTunes library before clearing cache files
  6. Try DFU Mode Restore

    DFU mode restore will erase all data on your iPhone - ensure you have a recent backup

Parts You May Need

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Lightning to USB cable
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USB-C to USB cable
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Lightning to USB cable
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USB-C to USB cable
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Lightning to USB cable
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USB-C to USB cable
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When to Call a Professional

Contact Apple Support if Error 1671 persists after trying all steps, if your iPhone won't enter DFU mode, or if you're uncomfortable performing a DFU restore that will erase your data.

Frequently Asked Questions

How long does iTunes Error 1671 take to resolve?
Error 1671 typically resolves in 15-60 minutes as iTunes downloads the iOS software. Larger updates or slower internet connections may take up to 2 hours.
Can I use my computer while iTunes downloads iOS software?
Yes, you can use your computer for other tasks while iTunes downloads in the background. However, avoid bandwidth-heavy activities that might slow the download.
What causes iPhone Error 1671 to appear?
Error 1671 appears when iTunes needs to download iOS firmware for your device. It's a normal part of the update process, not an actual error requiring fixes.
Will Error 1671 delete my iPhone data?
No, Error 1671 itself won't delete data. However, if you proceed with a DFU restore to fix persistent issues, that will erase all iPhone data.
Can I cancel the download when Error 1671 appears?
You can cancel by clicking the X in iTunes, but you'll need to restart the entire update process later. It's best to let the download complete.