SafeB9SInstaller / Installing boot9strap
Which of these sounds like your issue?
SigHaxed FIRM - File not found
SigHaxed FIRM - invalid FIRM
MicroSD Card (X)MB/(X)MB free
Secret Sector - File not found
3DS always boots into SafeB9SInstaller
3DS won't turn on after running SafeB9SInstaller
My issue is not on the list