How to Unlock Bootloader of Android Devices via Fastboot

Unlocked bootloader is the first thing you will need while going for a custom ROM or Recovery. Now you might say why one needs to unlock the bootloader of his Android device when he simply wants to install a custom ROM. Well, bootloader, when enabled, verifies what it boots and since it cannot complete the verification and we cannot proceed with the installation, you need an unlocked bootloader. Unlocking the bootloader of Android devices is not something rocket science but there are two kinds of Android devices, one which allows you to unlock their bootloader easily and the other which requires the token. In this guide, we through some steps we will help you unlock Bootloader of Android devices. The reason why some of the manufacturers put the lock on bootloader is to attain the knowledge that user has unlocked the bootloader.

Contrary to popular belief, you can easily unlock the bootloader of most Android devices. Nexus phones are unlockable by default and so are most of HTC and Motorola. Then there are manufacturers who put a lock on the bootloader. Even in that case, due to the efforts of developers, the bootloaders get unlocked eventually. In this guide, we will put up a common method to help you unlock Bootloader of Android devices. You can the method provided in this guide on any Android device. In the case of failure, nothing will happen to the device, so it is worth trying.

Also Read: How to Install TWRP Recovery via Fastboot on Android Devices

One of the common methods to unlock the bootloader of Android device is through Fastboot. Fastboot lets you modify the file system images from a computer over a USB connection. Issuing some simple commands in the Fastboot will unlock the bootloader, it is as simple as that.


Unlocking the Bootloader will wipe/delete all the data from your device. So if you have important file or photos, it is better that you create a backup or transfer them to your computer.

Early Preparations

  • Download and Install latest Android USB Drivers on your Computer.
  • Make sure to charge your device to 60%, at least.
  • Use the link to setup ADB and Fastboot tool on your PC.→ Link
  • Enable OEM Unlocking and USB Debugging. To do so;
    • Navigate to SettingsAbout Device.
    • Tap the number 7 times. It will enable developer options.
    • Head back to Settings > Developer Options.
    • Tap on OEM Unlocking and USB Debugging to enable.

Unlock Bootloader of Android Devices via Fastboot

  • First, connect your Android device with computer via a USB cable.
  • On your computer, navigate to ADB and Fastboot folder and right click in the empty space.
  • From the options, click on “Open command window here”.
  • In the command window type the following command;

adb reboot bootloader

  • This will reboot the device into bootloader mode. Now you need to check the Fastboot connectivity, for that enter this command;

fastboot devices

  • If the device is connected, the above command will return the device code. The device is connected properly which means you can unlock the bootloader. Enter the below-given command;

fastboot oem unlock

  • The above command will unlock the bootloader of your Android device. Use the following command and reboot the device.

fastboot reboot

  • You can check if the bootloader is unlocked or not. If entering the below-given command returns True, that means the bootloader is unlocked, else repeat the process.

fastboot unlock-info

That’s it. If you have queries, let us know in the comments below.

2 thoughts on “How to Unlock Bootloader of Android Devices via Fastboot”

  1. All the commands work well except for this last command “fastboot unlock-info”
    When that command is issued, all i see is “waiting for device”… but it stays there and nothing else happens

    So i can’t tell if the procedure was successful or not

    I’m using an MTN S620 phone

    Please help me if you can

Leave a Comment