I'd recommend using the MrMario2011 video tutorial on YouTube or the one within the tutorial on section of this forum, I'd link but I'm not allowed to yet...
I don't think they do :P
However I'm interested in how DeriLoko2 how managed to do this? I'm guessing they changed the file extensions to be .3DS or .NDS?
I may try the new ram site, and download more RAM to my Switch. Not sure if ddr3 is the right ram
for it tho. Edit- no it uses floppy Ram, just like @AncientBoi