That's right, the 757/767/744 automatically goes into LAND 3 mode, if the conditions are met with the addition of APR, so the necessary autopilot systems work properly. Since, unlike the 737, you have a separate ILS receiver, the frequency of the ILS can and must be set only once. Since all hydraulic systems also have to work for a car country, you can maximally try to simulate a fault in a hydraulic system or switch off 2 ADIRU. But why, simply, as mentioned, simply finish the Approach manually ..