Take the idea: 1)Create sdinfo.bin on old 3ds and create xorpad. 2)Decrypt Mii Plaza save files 3)Repeat step 1 on New 3DS to create xorpads 4)use padxorer on decrypted SD content from old 3ds, using xorpads from new 3ds 5)copy contents to new 3ds mSD card Why wouldn't this work? is there also some stuff in the nand.fat16 that needs to be moved? If so, what? If I did step 1, then made more progress in a Mii plaza game (changing the data on my SD), and did step 1 again, would the resulting xorpad be different from the first one I made? I still wait for the day when there is a way to manually transfer my progress. Not sure if you can system transfer from a new3ds back to an old3ds, but that isn't an option now anyway since I don't feel like updating my new3ds and hardmodding to downgrade it.