G 1000 MFD brightness

I use the G1000 NXi, WT. (Should have described that initially) I was wondering if there was a brightness control knob, button, slider, what ever. Before the last update when I flew at night the MFD was pretty bright and washed out a bit, but couldn’t find any way to change the brightness. I read that if you go back to the native G1000 the MFD brightness improves.