I have 2 settings file:
Under the card's root dir (this one is used, it seems):
sampling=3,3,3,3,3,3,3,0,1,0,1,0,0,0,0,0,0,1,0,0,100,256,100,256,100,256,0,256
geometry=168,6,512,342,512,342,2,2,0,0,15667200,704,5000,370,1,0,0
palette=Mono_(2_level)
output_colour=1
output_invert=2
scanline_level=0
font_size=0
num_buffers=1
Under \Profiles\6-12_BIT_RGB ( I think I got this one from the net, I didn't like its palette)
sampling=1,1,1,1,1,1,1,0,0,0,5,0,0,0,0,0,0,1,0,0,100,256,100,256,100,256,0,256
geometry=172,22,512,342,512,342,2,2,0,1,15667200,704,5000,370,1,0,0
palette=RGB
output_colour=1
output_invert=1
scanline_level=0
border_colour=7
Do you have something similar to the first one?