I let my brother play with my N3DSXL which I installed emuNAND (I don't remember which firmware but its around 11.xxxx - I haven't update in months) After he gave it back to me, I couldn't let it boot up to the menu anymore. However, I still can boot to sysNand menu and check the firmware (it is 188.8.131.52U) so it means he did not accidentally upgrade my sysNand. I think he my messed up my menuhax or update the emuNand to the latest firmware. I still can choose to boot: ReiNand, Cakes, rxTools or HomeBrew launch. But only Homebrew launch is succeeded to load. When I chose ReiNand, only picture of the girl appears then the bottom screen and top screen are black. (I tried to update to the latest ReiNand 5.1 and same result - only picture of the girl load then both screens are black.) If you guys have any ideas how to fix this or show me the guide, please let me know. I tried to use google but I haven't found any answer yet. Thank you.