Help with R4 flashcart memory?

I was just playing on my DS with a R4 flashcart (original) when all the files in the memory card were deleted! It was all empty, and my games and saves were gone. I never backed up my saves, and now I regret that. Is there any way to get them back? Please help!!!

You could try searching for a file recovery program, but most try to get you to purchase them in order to use anything.
I used to use Tune Up Utilities. Again, a pay program.Just chalk it up as a lesson learned (keep backups from now on), and move on.