the 3DS infrared is not on the same wavelenght that IR remote for TV.
if it's higher, it could probably be modulated to lower it, but I'm not sure it's possible.
I have an universal IR receiver I could use to do some tests if needed, but I have a O3DS. I can't test N3DS homebrew.
I'll close this thread, it's the second one in a week about the same subject. please use the main IR thread linked above.