OK, I Kanged this from jerofld's guide on the 3vo. It's a standard procedure for all HTC devices, so it "should" work. From jerofld's guide:
Step 4) Unlocking with HTC Dev
If you haven't already unlocked your bootloader using HTC DEV Unlock (or
Revolutionary if you have HBOOT 1.3 or 1.4), we will do so now.
If you plan on using Revolutionary, pleast read this thread:
[GUIDE] How to Root the HTC EVO 3D [Video Walkthrough] - xda-developers
If you have HBOOT 1.5, you cannot use Revolutionary and must use HTC Dev. This guide will assume you have HBOOT 1.5.
For the record: I hate HTCdev. Many users have problems with it. If you have problems with this next section, please send feedback to
HTCdev explaining how their process is overly complicated and has issues. But do so politely, please.
Step 1) Getting into fastboot.
First, let's turn off one of HTC's defaulted on features. So let's turn off the very frustratingly named 'Fast Boot' in Settings > Power. No, this is not 'fastboot' in the Android SDK. This is a feature that is like Hibernate in Windows but for HTC devices. I really hate how HTC calls it this, but that's what they decided to call it.
Next, go to Settings > Applications > Development and check USB Debugging. You'll need this enabled for the adb reboot command. Plus a number of rooting apps require it. Give the computer a few minutes to recognize your phone, install drivers, and so on, if it needs to.
Connect your phone to your computer. From now until you're done flashing your ROM, you will not disconnect the USB cable. So don't even think about it!
Quick tip: Do NOT connect to a USB 3.0 port. For some reason, fastboot will not detect your device if you're connected through a USB 3.0 port. If you're unsure if you have a USB 3.0 port, don't worry about it unless your fastboot commands say that they're waiting for device when the device is hooked up.
Now, in the command prompt, type (or copy and paste):
Code:
adb reboot bootloader
You should now be in your bootloader. It should say "FASTBOOT USB" in red highlight. If so, this is good! If not, make sure HBOOT in the menu is highlighted and push the power button. This will change it to FASTBOOT and it'll detect that it's connected to USB and change in a few seconds. Now type (or copy):
Step 2) Getting the device identifier token and then flashing unlock_code.bin
Type the following command in the command prompt:
Code:
fastboot oem get_identifier_token
A long text boxes will come up. Right mouse button click on the screen and click mark. Then highlight the token from <<<< Identifier Token Start >>>> to <<<<< Identifier Token End >>>>>, like shown:
Do not highlight info or bootloader or any extra spaces or text. Once you have done that, right click again and hit copy.
Now go to
HTCdev - Unlock Bootloader and fill out the forms and paste the code into the device identifier token box and submit. You'll get an email (check your spam folder) with your unlock_code.bin. Once your receive it, transfer that file into your C:\sdk-tools\ folder. Now go back to your command window and type:
Code:
fastboot flash unlocktoken Unlock_code.bin
The unlock token should reboot the phone for you (so that you'll be back in Android). If it doesn't you can do it manually by reinserting the battery and then holding Vol down + power. You should now see UNLOCKED displayed at the top. If so, congratulations, you are now unlocked!
Time to flash a new ROM
