Mario and Luigi Bowser's Inside Story

follow the link Anandjones posted. There is an answer to your question there.

@ darky000 Um, thanks for anwsering back. I went searching on the net, most people saying the game locks up after reaching the 2nd boss. I've rearched that boss and defeated him, er, it. He was the reason why Bowser couldn't breath his flame. Correct me if I'm wrong.

my game freezes after i put "START GAME" after selecting my file. it just goes black. is there a patched rom that fixes that problem?? i have an R4.

https://www.romulation.org/forum/index.php?topic=22731.0