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How to Lock Bootloader on Android

December 29, 2023 by admin Category: How To

You are viewing the article How to Lock Bootloader on Android  at Tnhelearning.edu.vn you can quickly access the necessary information in the table of contents of the article below.

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This article is co-authored by a team of editors and trained researchers who confirm the accuracy and completeness of the article.

The wikiHow Content Management team carefully monitors the work of editors to ensure that every article is up to a high standard of quality.

This article has been viewed 3,525 times.

This wikiHow teaches you how to use Android Debug Bridge (ADB) for Windows to unlock the bootloader – the program that boots the system and the operating system that comes pre-installed on Android devices. Warning: this method has the potential to reformat the device. Make a backup before doing so.

Table of Contents

  • Steps
    • Install Android Debug Bridge (ADB)
    • Lock bootloader

Steps

Install Android Debug Bridge (ADB)

Image titled Lock the Bootloader on Android Step 1

Image titled Lock the Bootloader on Android Step 1

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Open a web browser on your computer.

  • The article is based on Windows operating system, but the process is not much different on a Mac.
Image titled Lock the Bootloader on Android Step 2

Image titled Lock the Bootloader on Android Step 2

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Go to https://androidmtk.com/download-15-seconds-adb-installer .
Image titled Lock the Bootloader on Android Step 3

Image titled Lock the Bootloader on Android Step 3

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Click on ADB Installer v1.4.3 . As of August 16, 2017, this is the latest version. If you see the word “Latest version” next to something else, click that link.
Image titled Lock the Bootloader on Android Step 4

Image titled Lock the Bootloader on Android Step 4

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Click Download . This is the big green oval button. The .zip file containing the “.exe” installation file will begin downloading.
Image titled Lock the Bootloader on Android Step 5

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Image titled Lock the Bootloader on Android Step 5

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Double-click the downloaded file. The contents of the .zip file will open.
Image titled Lock the Bootloader on Android Step 6

Image titled Lock the Bootloader on Android Step 6

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Double-click the file with the “.exe” extension located in the .zip folder. This file will be named “adb-setup-1.4.3.exe” or similar. The command line screen will open and ask if you want to install ADB and Fastboot. [1] X Research Source
Image titled Lock the Bootloader on Android Step 7

Image titled Lock the Bootloader on Android Step 7

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Click Y . Now the system will ask if you want to install system-wide ADB.
Image titled Lock the Bootloader on Android Step 8

Image titled Lock the Bootloader on Android Step 8

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Click Y . A notification about installing drivers for the device will appear.
Image titled Lock the Bootloader on Android Step 9

Image titled Lock the Bootloader on Android Step 9

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Click Y . After a while, the Device Driver Wizard installer will appear.
Image titled Lock the Bootloader on Android Step 10

Image titled Lock the Bootloader on Android Step 10

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Click Next .
Image titled Lock the Bootloader on Android Step 11

Image titled Lock the Bootloader on Android Step 11

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Click Finish . ADB will begin the installation on the computer.

Lock bootloader

Connect the Android device to the computer via a USB cable. If you do not have a USB cable with your device, use another compatible alternative cable that is safe for your device.

  • Depending on the device, you may need to install a driver in order for your computer to recognize your Android device. Visit the phone or tablet manufacturer’s website to download the driver.
Image titled Lock the Bootloader on Android Step 13

Image titled Lock the Bootloader on Android Step 13

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Press ⊞ Win + S to open the search bar on Windows.
Image titled Lock the Bootloader on Android Step 14

Image titled Lock the Bootloader on Android Step 14

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Enter cmd . A list of matches will appear, including “Command prompt”.
Image titled Lock the Bootloader on Android Step 15

Image titled Lock the Bootloader on Android Step 15

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Right click on “Command prompt” and select Run as administrator . As such, you will be able to use the command line with admin rights.
Image titled Lock the Bootloader on Android Step 16

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Image titled Lock the Bootloader on Android Step 16

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Click Yes to confirm. A command line window will open.
Image titled Lock the Bootloader on Android Step 17

Image titled Lock the Bootloader on Android Step 17

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Type adb reboot bootloader and press ↵ Enter . The ADB program will launch.
Image titled Lock the Bootloader on Android Step 18

Image titled Lock the Bootloader on Android Step 18

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Type fastboot oem lock and press ↵ Enter . The command will execute and lock the bootloader. If an error message appears, try entering one of these two commands:

  • fastboot flashing lock
  • OEM relock
  • Image titled Lock the Bootloader on Android Step 19

    Image titled Lock the Bootloader on Android Step 19

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    Type fastboot reboot and press ↵ Enter . The Android device will reboot and lock the bootloader.
  • X

    This article is co-authored by a team of editors and trained researchers who confirm the accuracy and completeness of the article.

    The wikiHow Content Management team carefully monitors the work of editors to ensure that every article is up to a high standard of quality.

    This article has been viewed 3,525 times.

    This wikiHow teaches you how to use Android Debug Bridge (ADB) for Windows to unlock the bootloader – the program that boots the system and the operating system that comes pre-installed on Android devices. Warning: this method has the potential to reformat the device. Make a backup before doing so.

    Thank you for reading this post How to Lock Bootloader on Android at Tnhelearning.edu.vn You can comment, see more related articles below and hope to help you with interesting information.

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