The iPhone could not restored an unknown error occurred (1611)

Hello all,
I got a new iPhone last week as a gift. I was happy about it. However, today after unplugging from the charger it powered off by itself. All of a sudden, it happened it was not expose to water or any damage. When I try to on it, I got this error message. Then it tries to restore but nothing works. What I have to do now? Please help me thanks.

The iPhone “iPhone” could not be restored. An unknown error occurred (1611).
