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
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Tools You'll Need
- Computer with iTunes installed
- Lightning or USB-C cable
- Stable internet connection
How to Fix Error Code Error 1671
-
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 -
Check Internet Connection
-
Restart iTunes if Stuck
Only restart iTunes if the progress bar hasn't moved for over 2 hours -
Update iTunes to Latest Version
-
Clear iTunes Cache
Back up your iTunes library before clearing cache files -
Try DFU Mode Restore
DFU mode restore will erase all data on your iPhone - ensure you have a recent backup
Parts You May Need
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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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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Lightning to USB cable
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USB-C to USB cable
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Lightning to USB cable
Check Price on Amazon
USB-C to USB cable
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Lightning to USB cable
Check Price on Amazon
USB-C to USB cable
Check Price on Amazon
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.