Just a reminder that providing specifics on, sharing links to, or naming websites where ROMs can be accessed is against the rules. If your post has any of this information it will be removed.
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Not sure about that specific tool, couldn't find very much through Google searching. This post contains links to some NDS/3DS tools, although not sure if those will be any use to you since I don't know too much about hacking later generations. Sorry I couldn't be more helpful!