Default htc one mini root problem

hi to all, first sorry for my english, not my first langage
I explain my problem:
I follow a guide to root my htc one mini(without oneclick root), and when i go in fastboot the message is "unloked", but when i have installed from recovery superuser, it doesn't work, i mean, the install is a succes, i can start the app, but when i use an app like titanium backup or still root checker, they say "you haven't the root privilege", and i don't understand what i'm misssing. Someone can help me?

Ty to all