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Unroot HTC One, relock the bootloader and restore to stock JB 4.2.2 Firmware

Gaining root access comes with great advantages for your Android based smartphone, but as you might know, bad things can also happen while you are trying to unchain the internal system of your phone. So, if you have encountered issues, or if you need to unroot your HTC One, then follow and complete this tutorial. Besides, by using the steps from below you will also learn how to relock the HTC One bootloader and flash the stock Android 4.2.2 Jelly Bean OS back to its system, so do resolve all the problems by applying the present step by step guide.

If you have recently rooted your One and since then dealing with unexpected issues, like the SIM tray won’t accept your SIM, force restarts, boot loops and so on, you should find a way to resolve these “bugs”. While updating to stock ROMs might be a solution for you, we do recommend instead a downgrade or restoration procedure. What does this means? Well, in a few words you should unroot your HTC One and relock the bootloader. In this way you can restore the warranty of your smartphone (it has been lost while gaining root access) and you can relock the system and reinstall the factory and default restrictions and apps.

Furthermore after relocking the bootloader re-flash the stock JB 4.2.2 firmware on your HTC One for revoking the root access and for receiving the default Android apps, features, looks and capabilities. By completing all the tasks mentioned above you will be able to resolve all the problems and remove the reported bugs – some might say that you can unbrick your HTC One.

Fortunately for you, thanks to those of xda-developers now we have a toolkit that can be easily used for completing the mentioned operations: relock the bootloder, unrooting and installing the stock Jelly Bean 4.2.2 firmware on your HTC One. So, use the following lines if you want to learn how to perform these tasks.

But before heading to the installation procedure complete the pre requisites:

  • Backup the HTC One data if you want to use your personal info and accounts after applying the steps from below. If you don’t want to apply a full backup at least consider in saving the text messages, call logs, market apps, contacts list and calendar info.
  • Make sure you can use a computer, your smartphone and its USB cable.
  • For being able to safely perform this method you need to deactivate the security protection that is running on both computer and handset: usually the antivirus, antimalware and Firewall protection is interfering with the flashing operation by interrupting the same – you don’t want that to happen.
  • Enable the USB debugging option on your device; you will have to connect your phone with the computer and for properly establishing the connection the USB debugging option must be checked.
  • You must check the battery status of your One: if there is less than 60% power left you should charge the battery (if not your phone might get turned off and bricked while you will try to unroot and unlock the bootloader), else you can skip this step.

Complete this step by step guide only if you own the HTC One smartphone. The toolkit can be used only for unrooting, unlocking the bootloader and installing stock Android Jelly Bean 4.2.2 software on the mentioned Android based device, so try not to mess things up.

How to Unroot HTC One, relock the bootloader and restore to stock JB 4.2.2 Firmware

  1. Download the toolkit from this page.
  2. Save the file on your computer and unzip the same on desktop.
  3. Extract the file into your C: drive.
  4. Install the HTC One drivers on your computer via toolkit – only if the drivers are not installed on your computer.
  5. For installing the drivers, open the toolkit.
  6. On the left you will have the option for installing the drivers, select the same.
  7. Then, follow the steps from below for learning how to relock the bootloader

How to Relock HTC One bootloader

  1. Run the toolkit once more.
  2. Connect your HTC One with the computer by using its USB cable.
  3. On the app you will have the “relock bootloader” option.
  4. Click on the same and then select “go”.
  5. A command prompt window will be displayed – close it.
  6. Your handset will reboot into fastboot mode.
  7. Close the new command prompt window; a new one will then be displayed.
  8. Now, your device will be relocked.
  9. In the end your phone will reboot automatically; you can close the cmd window once more as you are done.
  10. Now, head to the next section of this guide for learning how to

Install the stock JB 4.2.2 Firmware on HTC One

  1. Run the toolkit.
  2. From the app now select “useful links” followed by “factory RUU”.
  3. Click on “go”.
  4. Select or pick the RUU suitable with your HTC One.
  5. Save the file on desktop.
  6. Then, go to desktop and right click on the RUU file.
  7. Choose “run as administrator”.
  8. Follow the on-screen prompts for updating to stock Android OS.
  9. Done.

So, now you know what to do when dealing with issues and problems: relocking the bootloader and unrooting your HTC One. Use the steps from above whenever you need to downgrade your HTC One to stock Android 4.2.2 Jelly Bean OS as in this way you can easily restore the warranty and receive the default Android version to your smartphone. Use the comments area from below for sharing your thoughts and experience with us and stay close for further step by step guides.

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