My iPhone couldnn't updated and restored

Hi, my Iphone was terrible. First, I want to update my iOs to 10.0 but after reaching 60%, an unknown error occured (-1). Then I pull off my cable out of my PC. When I restart my phone, it is showing that I have to reconnect my phone to iTunes in the PC and restore the software. When I restore it same error occured. Now my phone stuck at that.