ROM Hack Help with Downgrade New 3ds¡¡

[Maikikii]

i try to downgrade mi New 3ds with Dsiware, all good, i can downgrade firm to 10.4, but when i try downgrade with sysupdater to 9.2, in the start appear a problem. "hold the power off" the black screen xD but i no have brick :/ somebody know waht happened?

 

[MrAsher]

bad downgrade file