Unlock Bootloader on Android

How to Unlock Bootloader on Android Through Fastboot Method?

Unlocking the bootloader allows you to install custom ROM on your Android device

If you own a smartphone and you are kind of a tech geek and searched anything related to custom ROMs, you may have probably read or heard about the term “Bootloader” at some point in the time. Here in this article, we are going to discuss in detail about the Bootloader and how to unlock it. So, let’s get right into it without wasting any time.

What is Bootloader?

The bootloader is a program that starts when you turn your phone on to activate the right Android OS. The bootloader decides when to enter the recovery mode or to run Android. Recovery mode is an independent environment that is separate from the main Android OS. It is available on all smartphones. The bootloader is always locked by the manufacturer.

Why Bootloader is locked?

The Bootloader is initially locked by the manufacturer so that only the original OS provided by the company can be used. If the bootloader is locked only the approved OS with digital signature will load. Almost every manufacturer locks their Bootloader and some manufactures release their bootloader already unlocked so that geek users can taste varieties of tweaks. A certain part of the phone’s memory can’t be accessed because of a locked bootloader.

Why do you need to Unlock Bootloader?

Many users want to install custom OS so that they have a different OS experience and enjoy it. To install a custom OS, you need to first unlock the bootloader. Unlocking bootloader gives you access to the root. Rooting your phone means giving you super access and permission to modify your OS.

Is unlocking the Bootloader safe?

Unlocking bootloader is safe but there are also some flaws. Almost all of the manufactures put a setup on their devices so that if a user unlocks a bootloader they will know about it and they can void the warranty of the device. The reason they disable the warranty is that unlocking gives you access to install unauthorized software. Unlocking bootloader will completely erase all your files be it images, movies, documents, etc. So keep a backup of all your files before performing this operation.

Steps to Unlock Bootloader Through Fastboot on Android

  • Firstly, you need to Setup your Fastboot and ADB on your laptop or PC.
  • Now enable USB debugging and then unlock your OEM on your Android device.
  • Connect your Android device to your PC or laptop via a USB cable.
  • Now open run by right-clicking on the start menu on your Windows PC and type cmd and press enter. A command window will appear on the screen.
  • Now enter the following command below and press enter to boot your device into bootloader.

adb reboot bootloader

  • If you get a request to access USB debugging on your device, accept it.
  • Now your device is in bootloader mode. Now enter one of the following commands to unlock it. The later command is for older devices.

fastboot flashing unlock

fastboot oem unlock

  • You may or may not get a confirmation screen on your Android device. If you get one, press the Volume Up key to highlight “Yes” and tap the power button to select it. Your bootloader process is now started which will hardly take a couple of minutes.
  • Your device will now reboot again into bootloader mode after the unlocking. Now to boot into system enter the following command:

fastboot reboot

  • Now your device will restart and all your data will be completely wiped and finally boot into the Android. You have to again set up your device the way when you first bought.


Unlocking Bootloader via Fastboot is a very simple and easy process. But most of the Android devices don’t support straightforward bootloader unlocking. The flagship devices from Motorola, LG, Sony doesn’t support direct bootloader unlocking. If you are unsure whether your devices will support direct unlock or not, it’s all fine. You can still try Fastboot. If it works its a great news and procced ahead and if it doesn’t it will do no harm to your phone. Before proceeding to the steps keep in mind that your charge of the phone is above 20%.

That’s all for the Bootloader unlocking guide. Let us know in the comments if you have successfully unlocked it.

About Akash Jyoti Das

Being a tech aficionado, Akash is highly fanatic about smartphones from a very young age. He is always aware of the latest happenings in the tech industry. In his free time, he loves playing PC games and flashing custom ROMs. Email: ajdas1008@gmail.com

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