Homebrew I'm trying to back up my WarioWare D.I.Y. save. Not having any luck so far. Any ideas?

[celebi23]

I hope that this is the correct spot for this topic. My apologies if this isn't the right spot.

So, ever since discovering the DoujinSoft Store and rediscovering some of my works:

* Fuzzies 00 (comic)
* Fuzzies 01
* Fuzzies 02

I've wanted to try and back up my WarioWare D.I.Y. save file. I've looked at & tried a wide range of tools (for the 3DS post, click here) with no luck:

* DSaveManager:
Even after setting everything up properly, I get the message "No card or save present!". I tried again with Tony Hawk's American Sk8land and that cart was recognized. Process crapped out about halfway though.

* Savgame manager V0.3
Doesn’t support WarioWare D.I.Y.

* TWLSaveTool
Doesn’t support WarioWare D.I.Y.

* ndsi-savedumper
Can't read the cartridge correctly

Is there some tool that I've missed? Or, is the WarioWare D.I.Y. save just stuck on the cart and can't be backed up?