You need a dump of the original Japanese game. Search for the following CRC32 hash to verify you have a clean dump:
: You must provide your own Japanese ROM file (typically .nds ). medarot ds rom english patch
You have two options:
There are two versions of the game: and Kuwagata (Stag) . Ensure you download the patch specifically made for the version you own, as the data structures for parts and encounters differ between the two. You need a dump of the original Japanese game