Try to open Decrypt9 on a9lh using the decrypt9.bin, rename it to "arm9loaderhax" and then turn on the 3ds and you should use it. Don't forget to backup the original arm9loaderhax before you rename it.
I can open the Decrypt9 with arm9loaderhax using Decrypt9.bin, and when I modified my SW and NNID save and inject again, go to NNID option and has the same settings..
The only option is doing in sysnand?
When I tried to download the smash update in eshop spoof I get an error, could you try with the Smash update 1.1.2?, I don't have any console with cfw so the tutorial isn't for me..