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How to Re-Lock Verizon HTC Droid DNA ADR6435 Bootloader

The HTC Droid DNA ADR6435 has been launched for some time and multiple users started to unlock its bootloader, but now there were some requests to re-lock the bootloaders. That is why I’ve created this post. Use all the info that is listed below and you’ll learn how to easily re-lock the HTC Droid DNA bootloader.

Read this entire post and you should be able to complete the relocking the bootloader without problems.

XDA member and developer, MyComputerDoctor, is the one who managed to compile the guide and tools to re-lcok the device and return to stock firmware. In order to successfully complete this tutorial, you will first need to read the preparation guide below:

  • use this tutorial only with the HTC Droid DNA ADR6435. Do not attempt to use this guide for any other smartphone as it won’t work.
  • You need to use a Windows computer.
  • The Android SDK should be installed on your PC along with an updated Android Debug Bridge software. More info you can find in the XDA Developers forums.
  • Enable USB debugging for your device from its Android developer settings.
  • Backup all your data as your device will be restored to stock firmware after re-lock.
  • If you plan to backup SMS, Call Logs and other similar data then you should use the following tools for Android: SMS backup & restore | Call Logs backup & restore | APN Settings Backup & Restore | AppBack for Android application. Some of these tools will ask for root access.
  • Sync your contacts with your Gmail account.
  • All the other data should be moved on your computer.
  • Note that this is a guide for advanced Android users. Do not attempt to use this tutorial in case you’re a novice.
  • Make sure that your phone’s battery power level is over 50%. This will prevent it from powering off while you’re changing its settings.
  • In case you will want to re-unlock the device after relocking it now, then you can use the last part of this post as you will find all the instructions required.
  • Read the entire post and make sure that you won’t skip any steps that I’ve listed.
  • If you cannot complete the tutorial then you should ask for more help in comments.

These were all the guidelines that you had to read before getting to the next part of this post. Re-locking your device’s bootloader shouldn’t be too hard.

How to relock the HTC Droid DNA AD6435 Bootloader:

  1. Download the HTC RUU Executable file from HERE or HERE. The complete name of the file is this: (RUU_DLX_WL_JB_45_VERIZON _WWE_1.15.605.4_Radio_1.00.00.1023_3_NV _VZW_1.98_002_release_290923_signed.exe,  md5sum: a8246fae48ef00dbf3b2d7aa1a2a0090).
  2. Save the file on your PC.
  3. Power off the HTC Droid DNA device.
  4. Now you have to boot it into Bootloader mode. It can be done by pressing and holding Power and Volume Down keys.
  5. Select ‘fastboot’ option from the Bootloader selection menu and then press Power to load the Fastboot mode.
  6. Next, connect your device to PC using the USB cable.
  7. Launch the Command Prompt on your computer.
  8. Enter this command and make sure that the phone’s serial number appears after entering it: fastboot device
  9. Now, in order to relock the bootloader, you will need to enter the following command line:
    > fastboot oem lock
  10. When the phone’s bootloader tells you that the bootloader has been locked you will have to restart the device into Fastboot mode once again.
  11. Now, launch the HTC RUU executable file on your computer.
  12. Follow the on-screen instructions.
  13. When the re-lock is complete you will notice that your device restarts to stock firmware.

That’s it, you’ve managed to relock the bootloader of your HTC Droid DNA. The HBOOT / Bootloader menu should say ‘RELOCKED’ and that will mean that the guide was successful. Your smartphone should now be restored to Stock 1.15.605.4 firmware.

Now, if you want to re-unlock then you will need to read the tutorial below. Don’t skip any steps.

How to re-unlock the HTC Droid DNA AD6435 Bootloader after you’ve relocked it:

  1. Power off the smartphone.
  2. Boot into Bootloader mode. Press Power and Volume Down buttons at the same time.
  3. Select the ‘Fastboot’ option and confirm that you want to boot into Fastboot mode.
  4. Next, you will have to copy the ‘Unlock token’ you got when you’ve unlocked the device the first time. You received it from HTCdev. Copy the file in to the folder where ‘Fastboot exe’ file is present.
  5. Now, connect your device to your computer.
  6. Launch the Command Prompt window.
  7. Enter this command to make sure that your device has been recognized: fastboot devices
  8. Now, you have to install the Unlock Token by entering the following command line: fastboot flash unlocktoken Unlock_Code.bin
  9. The HTC Droid DNA will restart now.
  10. When the restart is complete you will need to power off the device.
  11. Restart your device into Fastboot Mode.
  12. Bootloader mode should say that it is ‘UNLOCKED’. Now you can choose to install a kernel or a custom recovery. That’s it, you successfully re-unlocked your HTC Droid DNA bootloader.

NOTE: in case the guide doesn’t work the first time, you should repeat the tutorial starting with step 5. Make sure that you use the same Unlock Token you obtained from HTCdev the first time you unlocked the HTC Droid DNA bootloader.

These were all the steps that you had to take. If you have any other questions, please leave them posted in the comments section and we will get back to you.

Remember that this is a guide for advance Android users and you shouldn’t blame us in case something goes wrong and you brick the phone.

Verizon HTC Droid DNA Articles