Apple Error 4014 — Causes & Fix
On Apple devices, Error 4014 means the restore/update failed due to a communication problem between the iPhone and computer — closely related to error 4013.
- Applies to
- Apple devices
- Time to fix
- 10–45 minutes
What it means
Causes include a faulty cable/USB, an unstable connection, outdated software, or a hardware fault. This is a Apple error; if it persists, Apple's official support has device-specific steps.
Symptoms
- "...unknown error occurred (4014)."
- Update/restore fails to complete
How to fix it
- 1
Swap cable/port, update software
1. Use a genuine cable and a different USB port; update iTunes/Finder.
- 2
DFU restore
1. Try a DFU-mode restore; if it keeps failing, have the hardware checked.
Frequently asked questions
4013 vs 4014?
Both are connection/hardware errors during restore. Fix them the same way: genuine cable, different port, updated software, then a DFU restore.
Last updated July 20, 2026
Guidance only — always consult a qualified professional or the official service manual before carrying out repairs.