Are you currently seeing this error on a , and have you already tried a different USB cable ? ERROR: Unable to restore iDevice(-75). - Apple Community
If you have tried different cables, computers, and DFU mode, and you still see Error 75, there may be a hardware fault with the device's or the logic board . Inspect the charging port for lint or debris and clean it carefully with a toothpick or compressed air. 3utools error unable to restore idevice75 link
