Got a m11x and when i try to change module setting from f2 to f3 it says model display only. Same when i try to change models. Doing it like the manuel says thanx in advance

turn off the radio. now hold the display slide to the right until the display turns on. now you can change the setting.

it's a safety feature that prevents you from changing settings that will cause a car that is running or switched on from running off.

Thank you so much for that info. Did the trick. Gunna love this radio over my dx. No more glitching. Woohoo