I can't start custom roms like Mokee or RR. I have the bootloader unlocked and the cn/en twrp. I am able to install the MIUI8 rom and ZUI custom ones but when I flash the Mokee or RR ROM (after data,system,cache,dalvik wipes) it never starts. I can see the Mokee open source animation but no more. Last time I was waiting 2 hours with the animation and it doesn't start. Any idea?