how can i get root on gingerbread evo

[vite30]

I try to back to 2.2 I use like 6 different ruu and don't work it
Says error connected usb cable help

 

[drumist]

I try to back to 2.2 I use like 6 different ruu and don't work it
Says error connected usb cable help

You're in the wrong forum.