Default ROOT 1.27 with new motherboard PROBLEM

I have already my sensation rooted, but i have a new motherboard, and need to root!!
I try to method http://forum.xda-developers.com/show....php?t=1661631, but in Juopunutbear , says need HTC unlock.
I try to do htc unlock, but not works, says fastboot flash unlocktoken Unlock_code.bin failed everytime..
with method rumrunner, also failed, go to fastboot and no advance...

Suggestions please