So, I'll get straight to the point.
I managed to find my acekard2i cartridge which says "compatible with DSI and 3DS" that I had been using back in 2014.
Now all I wanted was to check if it really worked with the 3DS.
I did the update of AKAIO 1.9.0 and the cartidge became something japanese...
btw i feel this a good time to remind you guys that sea of thieves was made by rare, who also made DKC1-3 and DK64, alongside banjo kazooie and conker's bad fur day