How can I see the firmware code in nintendo 3ds XL

I know it's a very stupid question. Even though I want to see my nintendo's code.

In these days there are so many way to hack nintendo game save files.

Just using a web browser in 3DS!!

It's very interesting way to hack 3DS and I want to adjust it to my Korean nintendo.

But Korean 3DS firmware doesn't work because of difference of firmware.

It's version is exactly same to us version, but it doesn't work.

This is the reason why I wanna see my firmware code.

What can I do for analyzing it?

Is there anything I can do?