Wait, a scene-released NAND? What is this blasphemy?
Seriously though, I can't see how that's possible without the following being implemented first:
1) Dump personal 3DS per-console encryption key. (no released method)
2) Decrypt EmuNAND 9.X dump using said per-console key. (no released method)
3) Share decrypted 9.X EmuNAND to be re-encrypted to other consoles using their per-console encryption keys. (no released method)
As none of the required steps have been publicly released, to my knowledge, this is not, at this time, possible for the general public to do.
Beyond those steps as well, you may need to patch over other per-console information, like CID/NNID/Tokens/Serial/Model/etc.
There are a lot of unknowns that are yet to be addressed, so until they are, I'm calling BS on this.