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How To Unlock Bootloader of T-Mobile HTC One

No doubt that the HTC One is really a worthy device as it seems that HTC has managed to gain a lot of positive reviews because of many decent features, I know you may face cons but it support various tasks of your life that force you to give it a try such as the UltraPixel camera for a better photography that focus on quality instead of quantity, stunning metal body, BoomSound, and a lot more, the HTC One runs Android Jelly Bean with latest HTC Sense UI, so in the end we can expect that the Android development will deal in impressive modification of HTC One with custom ROMs, tweaks, hacks and more.

But when we talk about modification of this HTC’s phone, bootloader unlocking is the first thing to come in mind as it enables you to root, install custom recovery, custom kernels and more. However it’s really important to note that unlocking the bootloader will void the warranty of your HTC One permanently, so think about this task twice, if you can’t afford this lose, stay away for unlocking.

This guide shows you how to unlock the bootloader of T-Mobile HTC One, backup everything because unlocking will wipe phone, you can you can sync your contacts with Gmail account and for messages use SMS apps, lastly use the carbon Android app to backup apps and data. Use a Windows PC and ensure that USB phone drivers are installed on your computer, you can use HTC Sync to install drivers.

DISCLAIMER: Please proceed the below guide at your own risk, Android Egis will not be held responsible if your device lost data or gets damaged following this guide.


Step #1: Download the fastboot package to your PC.

Step #2: Unzip the downloaded file into C drive.

Step #3: Head over to official HTC Unlock Bootloader page.

Step #4: Log in if you already have an account or create a new account by clicking on “register” button.

Step #5: Once you’re logged in with HTC, open unlock bootloader page here.

Step #6: There you may see a drop down menu “all other supported models”, select it and then click on “begin unlock bootloader” page. It will show up a warning, read it carefully and then click on “yes” button.

Step #7: Accept legal terms when it ask and click on “proceed to unlock instructions” button.

Step #8: There are four steps to follow that we’re explaining in simple words:

Make sure phone is not connected with PC and turn it off. Then reboot phone by holding down volume down and power button until you enter in bootloader mode, then use volume keys to highlight and select fastboot menu using power button. Once you’re in fastboot mode, plug phone to PC using USB cable.

Step #9: Head over to second page on unlock bootloader site by clicking on “proceed to step 5” button.

Step #10: There, don’t follow anything. Instead of following anything on second page, open up the fastboot folder you have unzipped at C drive in “Step #2”.

Step #11: Open up command prompt, you can find it under start menu>programs>accessories.

Step #12: Enter following command on command prompt to enter in fastboot folder:


Step #13: Now issue another command, it will generate the serial number of phone, if it doesn’t generate the serial number your phone is not connected with PC properly, make sure phone drivers are installed:

fastboot devices

Step #14: On the HTC developer site, click on “proceed to step 8” to open next page.

Step #15: There following everything the page ask and at the end click on “submit” button.

Step #16: They’ll show you “token submitted successfully” message on next page and send you unlock key through email.

Step #17: Log in to your mail account, check HTC mail and download “Unlock_code.bin” file that is attached with the mail.

Step #18: Place the “Unlock_code.bin” to the Fastboot folder in C drive.

Step #19: Issue following command on command prompt to unlock the bootloader:

fastboot flash unlocktoken Unlock_code.bin

The above command will send a unlock bootloader request on phone, use volume keys to navigate and power key to confirm the request.

Step #20: Your phone will reboot and perform factory reset automatically.

Step #21: Unplug phone from PC.

Great job, the bootloader of your T-Mobile One is unlocked now, you can do everything that needs an unlocked bootloader. If you experience any error, leave a comment below.

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