u/Complex-Race9601

I got a weird R36S clone that even after i putting arkos on a new sd card the old system still stays on it when i boot it, after a little research i found another guy with more info about it, its this exact system

https://www.reddit.com/r/R36S/comments/1prk69l/r36s_clone_based_on_android_and_mtk_6572_soc/?tl=pt-pt

Does someone know how to put arkos on it? I think it has the system on the motherboard so i think i have to bypass for it to work (sorry for bad english it inst my first launguage)