This is a good root technique that a lot of vendors seem to miss, i've rooted a bunch of devices this way (including the Huawei G300, various Archos devices of old etc. etc.) but in the past it's been only of limited use on HTC devices due to their S-ON partition locking.
Sooooo... I found an exploit and i've packaged it up. It works on my bootloader LOCKED device, but I do have S-OFF, so it's hard for me to test properly. I've also only tested the script on Mac at this time.
To use, download the zip file below, extract and run the appropriate script for your platform. You use this at your own risk! Worst case scenario, you'll have to reflash with a RUU (make sure you have one handy!)
- r3 - DOWNLOAD (ROMraid)
PS If you go and post this on another site, don't be a douche - link back to this topic and don't re-host the file. Thanks.