How can I turn off Exp. Sim on canon 650d live view in manual mode?

[bahadirozen]

Hey guys. I just wanted to ask how to turn off exp. sim.? I need to turn it off because I am using 650d connected with my Mac using by Eos utility. If I turn on live view shot on my Mac I see black of my exposure because my exposure is 1/125 f11 iso 100(external flash exposure). I want to use my 650d like my 5dmark3 in my studio. Thanks.

[MikeSowsun]

I found that after disabling Exp Sim with Magic Lantern, it would stay disabled even after I un-installed Magic Lantern