Hacking mysterious unknow flashcart

[Dreamydude]

So, I found an unusual flashcart and im failing to find the right firmware files


the covers were gone, so I only have the circuit board.
it isn't an r4 OR dstt OR acekard OR M3, because the micro SD slot is on the side, not the top.

it works on all DS's, up to the latest n3ds firmware.
it has the SpongeBob squarepants Atlantis THQ logo when viewing in the ds, but when I start it it says: No System file found ! put system file in.
I have tried about every popular flashcart firmware there is, to no succes

I might get pictures of it for more information

(also I tried posting this on the Ask forums, but the post thread button doesn't show up there)

 

[GreatCrippler]

EZ Flash Vi Has the SD slot on the side. Pictures would help.

 

[Technicmaster0]

M3i Zero had side loading, too. Pictures would really help.

 

[Dreamydude]

Ok, here are some pictures

 

[GreatCrippler]

M3i Zero

 

[Dreamydude]

oki - but I already tried that firmware, then I must be doing something wrong

 

[Technicmaster0]

Probably either bricked or contact issue

 

[Dreamydude]

welp never mind, it works fine now, Thanks for he quick response