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Sep 21, 2016 5:37 AM in response to Mojtaba021by irina_w,Hello Mojtaba021,
After reviewing your post, it sounds like the iPhone isn't being recognized by iTunes and gives you an invalid response error.
I would recommend you read this article, it may be able to help troubleshoot the issue.- An error message that includes, "invalid response"
Use these steps to see if the issue is with your USB cable, USB port, or computer. Try again after each step:
- Use the USB cable that came with your device. If you don't have it, try a different Apple USB cable.
- Switch to a different USB port on your computer. Don't plug into your keyboard.
- Plug into a different computer.
- If you still see the error, you can check for other USB issues, issues with third-party security software, and issues with hardware.
Get help with iOS update and restore errors - Apple Support
Thank you for using Apple Support Communities. Have a nice day. -
Sep 21, 2016 6:02 AM in response to irina_wby Cheongky,Im having this problem too. Same error message on both MB air and MB pro...:( i have done all the recommended steps like restart pc and phone, using different usb ports and cables..... doesnt work....
