Throw in a couple of more dollars and save yourself some trouble by buying an Acekard 2i. It's better then the R4i Gold since it's updated faster. If you really want a cheap card then the R4i Gold is a good choice indeed. Yes. You need to update the bootloader in a DSLite in order for it to work on a updated 3DS. You could ask the retailer if they want to update it for you.