R4i Gold 3DS Card backup for ntrboot flasher. It works on card revision C. It may work on other revisions. Depending on the version of the flasher, you'll have to rename the backup file.
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