Honestly, get yourself a dedicated slot2 cart like the Supercard or M3 Perfect to dump games with, if you have a DSphat or lite, that is. It's faster than the dog-slow WiFi version and easier to use since you can do it without involving anyone else or the net, you just use your DS and that's it. Just DLDI patch the dumper program for your slot2 cart, put it on your slot2 and run it in DS mode, follow the prompts and off you go.
I've personally dumped a couple dozen of my own carts using that method.....a couple of which (ones that weren't available previously) are now available to the scene because of me and it's much easier than the lame slow-ass WiFi dumper.
USA DS GAME DUMPERS ARE BADLY NEEDED! It seems the USA dumpers have all quit bothering, so it's up to us regular gamers now to get the USA games to the scene. We need every single USA dump we can get our grubby mitts on. All you gotta do is make sure the admin of various ROM sites get the dump and it WILL show up on the scene.
Oh, and I don't know about the WiFi dumper, but the slot2 dumper DOES have it where you can backup your save from your retail cart. I did it with FF3, which is about the last game I bought before I got flashcarts.
Rotflmao