Hacking Reboot Patch for RxTools Old 3DS?

[Pikasack]

I heard that you can get Super Smash Bros 3DS and MH4U to not cause your system to reboot by launching a CIA with RxTools, but some Custom Firmwares have that feature built in.
Can anyone link me the CIA or should I just go for AuReinand?
I use Menuhax by the way.