iOS & iPhone Fixes
Fix iPhone Error 4013 During Update or Restore Without Losing Photos
Safety Rule: Always choose Update first when Finder or Apple Devices shows Error 4013. Clicking Restore immediately erases the encrypted user data partition.
Error 4013 usually triggers when communication between your Mac/PC updater host and the iPhone drops mid-handshake right after the Apple logo appears. While hardware NAND failures exist, most everyday cases trace back to USB power drops or nearly full storage.
Step-by-Step Host & Cable Isolation
| Symptom Observed | Probable Root Cause | First Step to Try |
|---|---|---|
| Disconnects at Apple splash screen | Unpowered USB hub or worn USB-C cable | Plug directly into native motherboard USB port |
| Loops immediately after extraction | Insufficient free internal storage (< 3 GB) | Force restart & retry Update twice cleanly |
| Repeats on two separate computers | Baseband or NAND hardware fault | Inspect updater log & check battery voltage draw |
Force Restart Sequence (USB-C / Face ID iPhones)
- Quickly press and release Volume Up.
- Quickly press and release Volume Down.
- Hold the Side button past the Apple logo until the Recovery Mode cable icon shows, then reconnect directly to Finder.
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