Apple iPhone Error Code 1644: How to Fix It
Easy 15-30 minutes Medium Severity
Verified June 2026
- Error Code
- 1644
- Brand
- Apple iPhone
- Product Type
- mobile
- Severity
- Medium
- DIY Difficulty
- Easy
- Estimated Fix Time
- 15-30 minutes
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Tools You'll Need
- Computer with iTunes
- USB cable
- Internet connection
How to Fix Error Code 1644
-
Delete the Existing IPSW File
-
Check Disk Space
-
Force Restart Your iPhone
-
Update iTunes to Latest Version
-
Re-download the IPSW File Manually
Only download from reputable sites to avoid malware. -
Try a Different Computer or USB Port
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When to Call a Professional
If you've tried all steps and still get error 1644, the issue may be with the iPhone's hardware (e.g., NAND flash) or a deeper software problem. Contact Apple Support or visit an Apple Store.Frequently Asked Questions
What causes iPhone error 1644 in iTunes?
Error 1644 typically means the IPSW firmware file is corrupted or incomplete. This can happen due to a bad download, insufficient disk space, or antivirus software interfering.
Will I lose data when fixing error 1644?
Yes, restoring an iPhone erases all data. If you haven't backed up, try exiting recovery mode first by force restarting. If that fails, you'll have to restore and lose data.
Can I fix error 1644 without a computer?
No, error 1644 appears during an iTunes restoration, so a computer with iTunes is required. You can try using a different computer if yours isn't working.
Does error 1644 mean my iPhone is bricked?
Not necessarily. It usually means a corrupted firmware file. Following the steps above should resolve it. If not, it could be a hardware issue.
How do I prevent error 1644 in the future?
Ensure a stable internet connection when downloading firmware, keep iTunes updated, and avoid interrupting the restore process. Also, keep at least 5GB free on your computer.