HTC devices are always launched with a feature called locked bootloader and you are required to unlock bootloader using the manual ways by the HTC Dev website. Now here the question arises that Why do you need to unlock bootloader? Developers and devs who are able to make custom ROMs and other tweaks for the phone that you require an unlocked bootloader.
Why would you be required to unlock bootloader on your HTC device? You will now be able to install custom/modified ROMs, flash a custom recovery that would give you plenty of features and install other tweaks that need entire system access. This tutorial will actually tell you that how to do the whole thing.

Disclaimer: All the tools, mods or ROMs mentioned below belong to their respective owners/developers. And in case of any damage done, we are not responsible, proceed at your own risk.
You must ensure that you have installed the USB drivers of your HTC device in order to connect it with the computer.
How to Unlock Bootloader of HTC Phones
Here you have a detailed step-by-step instructions guide that will deal you how to unlock bootloader of your HTC device. You must read each and every line with great. It is suggested that you must read the whole tutorial at least once before you proceed with it.
IMPORTANT: Please clearly note that unlocking your own device might void all or parts of your warranty that is given by HTC.
Step 1 - First thing that you need to do go to HTCDev.com website.

Step 2 - After that click on ‘Register’ and create an account at the HTCDev website.

Step 3 - You must activate your account. After that you are required to login and go to main page of HTCDev.

Step 4 - 4th step is to do Click on “Unlock Bootloader” button and later on click the “Get Started” button.
Step 5 - After that you must select “All Other Supported Models” from the dropdown list and after doing that click the “Begin”

Step 6 - You must read the warning popup message with great care and later on press the ‘Yes’ button.

Step 7 - 7th step is to check both the boxes in the Legal Terms popup box. After that you are required to press the “Proceed to Unlock Instructions” button.

Step 8 - Next thing to do is Download Fastboot files if you don’t have them already and afterwards extract in C: drive.
Step 9 – You are required to hold the Power button on your HTC device for at least 10 seconds in order to completely turn it off.
Step 10 - Afterwards go to Bootloader Mode on your device. You must be wondering in your head that How? The answer to your question is to Press Volume Down and Power in order to start the device into Bootloader mode.

Step 11 - In order to select up or down you must use the Volume buttons. Highlight Fastboot and afterwards press the Power button in order to select.

Step 12 - Next thing to do is connect your HTC device to the computer using a USB cable.

Step 13 - Now what you are required to do is open Command Prompt Again thinking, How? Simple answer is that Click the Start button and type ‘cmd’ (without quotes) and in the end just press Enter.

Step 14 - Next thing to do is in the Command Prompt window, you are required to type the following command and press Enter.
cd c:fastboot

Step 15 - After that you must type the following command and then press Enter.
fastboot oem get_identifier_token
Step 16 - You will come across a long string of text (that is also called identifier token). What to do now? Open this page on HTCDev.
Step 17 - Afterwards follow the instructions as they are given there in order to select and copy text from Command Prompt.
Step 18 - Once it gets copied, you must paste that identifier token into the box at the bottom of that HTCDev page and after that click Submit.

Step 19 - Once you are done with all these steps. You are likely receive an email by HTC (on the registered email) with a link to the second part of the instructions and your “Unlock_code.bin” file will then be attached.
Step 20 - In next step you will download “Unlock_code.bin” and you will be required to save it in your Fastboot folder (C:fastbooot in our case).
Step 21 - Afterwards type the following command in Command Prompt and then press Enter.
fastboot flash unlocktoken Unlock_code.bin
Step 22 - After you are done with all these steps, you must now check your phone. You must read on-screen instructions. And here, press Volume Up to accept and the Power button in order to confirm.
That’s all folks. Your HTC device now has a unlocked bootloader. That clearly implies that you can install custom ROMs, flash a custom recovery and also be able to perform other system tweaks on your HTC phone right now.






