As i said already, i've a japanese 3ds.open it up in gateway rom patcher 0.6 post a screenshot of what you see
First image should be the "chinese first" dump, and the second is caravan dump (i also tried to rename the "chinese" one .3dz, but still can't go online. I also tried caravan dump as it is, still can't go online. I also tried to change the first one into "manufacturer: macronix, and it created this chip id: C2F88090. Still, can't go online anyway...)
About the game, i can see 1.0.1 in the bottom right corner, so i guess i patched that correctly