Not possible right now (hardmod is required). Hopefully in the future it'll change.
Thanks for listening , buddy ! But have a guy here in my town that is charging a note to this downgrade without opening the console, my friend joined the money and was there to do , and the guy really did not need to do hardmod ! He says that the boss has an account on a paid site where there they discuss much about 3ds , downgrades and jailbreaks in general and it was on this site that he learned !