Riolist

I figure someone here would know the answer for this. Is there any way to modify a Rockchip firmware, ALL the screens, without having .lst file for it? I have several players with that same old boring ugly Rockchip interface and it's driving me nuts - I've GOT to change it!!!!! But, I don't have a .lst file, and all the ones i've tried just give me distorted pictures after the start-up and shut-down sequences. PLEASE HELP ME, AAAAAHHHH!!