So you see the itunes logo on the ipad and when connected it and tried to restore it you got 1671? Try to restore the ipad in DFU Mode: Step 1: Turn off your iPod touch / iPhone completely and connect to PC / mac Step 2: Hold down the Power button for 3 seconds Step 3: Without releasing the power button, also hold the Home button for 10 seconds Step 4: Without releasing the home button, release the power button and keep holding the Home button for 20 seconds.