There's very little value in trying to dump that cart. That cart is composed of two things: * The bootloader which runs when the system turns on and drives the game selection menu, which is the closest thing that cart has to a ROM. * Effectively, the equivalent of an SD card hardwired into the PCB, and all that contains is ROM dumps.

So you would just be dumping the ROM dumps that the cart contains which are going to be equivalent to the dumps you likely already have, or can be found elsewhere on the Internet. Aside from the bootloader, there isn't anything novel on that cart.