Hi, I have dug up my GB micro and I have a generic 512mb flash card from ebay back in 2008, still works and loads the games that are on it but I have lost the software to update the ROMs. Have tried all the software on the site but does not work...
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