HTC Super Tool v3 out to root and unlock bootloader on almost all HTC phones with a few easy steps
The enterprising folks over at XDA-Devs have managed to make the life with your HTC handset a bit easier, outing v3 of the HTC Super Tool. The software is supposed to root, S-off, and unlock the bootloader on many popular HTC phones, like the HTC Sensation 4G or the EVO 3D.
The developer FRIGID says that theoretically it should work with all HTC handsets, as their firmware structure is similar. You need a few driver and software downloads, as well as well-charged battery, of course, as in all such cases, but other than that, the instructions in the source link are pretty straighforward.