3utools Error Unable To Restore Idevice75 Link Work Official

Solving the 3uTools "Unable to Restore iDevice (-75)" Error 

Seek signed IPSW:

• Use original Apple cable
• Connect directly to PC USB 2.0 port (avoid hubs/USB 3.0)
• Try different port / cable

Check IPSW file:

• Put device into Recovery Mode (or DFU mode if required) per your model, then attempt restore.