Hardware Hardmodding a Action Replay DSi (3ds compat.)?

[dotqurter_]

Hello. Today, since my Action Replay is pronounced dead (highly doubt it's supposed to do nothing and have a bulge in the centre of it), I decided to rip the casing off the cartridge-type device, but now I want to see if there is anything I can do with it.

(I originally wanted to rip the usb port off the device and hardmod into my 3DS's sdcard read/write so I could add files when I don't have a computer with a SDCARD slot handy). I asked my father, and he mentioned ports for modding (as if they were going to add stuff onto it). Here's some pics of the board itself (front and back)