So, my friend gave me his old 3DS. I decided to install a CFW using the guide, and everything went fine all the way till the end. Only afterward did I notice that I have all his game installations and settings etc., so I figured I'll do a reformat (using the Nintendo setting "Format Console") and then re-install the CFW. Following the guide now, it gives me a black screen when I boot safeHax (I have a game cartridge in the slot). I have Luma 3.6 or whatever installed when I hold select as I power on, and I have a sysnand backup if that's what's needed to get the CFW back. Alternatively, if I could just skip ahead in the guide or something, I'd appreciate that. From my perspective I just used like 15 different applications, having no idea what any of them do, to get the CFW working. Thanks in advance, guys!