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Mike
Mike, Mac Medic
Category: Mac
Satisfied Customers: 8795
Experience:  Over 20 years IT experience with Apple computers in publishing, marketing and design.
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My error message says the iphone copuld not be restored. An

Customer Question

My error message says the iphone copuld not be restored. An unknown error occurred (-1)
Submitted: 4 years ago.
Category: Mac
Expert:  Mike replied 4 years ago.
Try this:

orce restore iPhone
1. Hold down the home button and power button at the same time. This will force the screen to fade and the Apple Logo to reappear. KEEP holding the two buttons down until the iPhone shuts off.

2. Once the iPhone is off plug one end of the usb cable into the PC .

3. Open iTunes

3. While holding down the Home button plug the cable into the iphone.
Contunue holding the home button until the you the itunes logo and the picture of the cable on the iPhone screen. This may take up to 30 seconds.

4. iTunes should now detect the iPhone and you can perform a restore.
Customer: replied 4 years ago.
I have just followed these steps and I'm still getting the same error message, do you have any other alternatives that I could try?
Expert:  Mike replied 4 years ago.
Hold the Sleep and Menu buttons together until you see the Apple Logo.
Customer: replied 4 years ago.
I am still getting the message 'The iPhone 'iPhone' could not be restored. An unknown error occurred.
Expert:  Mike replied 4 years ago.
Are you on Mac or PC?
Customer: replied 4 years ago.
a pc
Expert:  Mike replied 4 years ago.
Go to Start / Apple Software Update.
Customer: replied 4 years ago.
I have done that and the software is up to date.
Expert:  Mike replied 4 years ago.
Ok try the instructions again.
Customer: replied 4 years ago.
I've followed all of the instructions again and I'm still receiving the same message.
Expert:  Mike replied 4 years ago.
Ok sorry I am out of ideas. I'll opt out. Good luck.
Expert:  Lindie-mod replied 4 years ago.
Hi, I’m a moderator for this topic and I wonder whether you’re still waiting for an answer. If you are, please let me know and I will do my best to find an Expert to assist you right away. If not, feel free to let me know and I will cancel this question for you. Thank you!