How To Unlock Bootloader of Samsung Smartphones With Odin Tool

This guide covers all the steps to unlock the bootloader on Samsung devices. Therefore, If you have made up your mind to unlock bootloader, then follow this guide to leverage from endless customization, you can do on your smartphone.

Before diving into the main guide, have a look at the brief description of Bootloader. Its advantages and disadvantages.

What is Bootloader?

In simple words, a bootloader is a set of instructions that are executed automatically, whenever the device is turned ON. The operating system and Kernel needs bootloader instructions to start the boot process and operate the recovery mode.

Moreover, you can find the bootloader on every Android smartphone, but location may vary depending upon different smartphone brands.

By default, the bootloader of every smartphone is locked. The reason behind it is very obvious as every manufacturer wants the users to stay with their default provided skin and stock ROMs.

But as we know, Android is an open source and that gives more power and benefits to user’s to customize their smartphones with endless possibilities. Therefore, Android also provide users an alternate route to get a chance to customize their smartphone.

This process requires many hurdles ahead. It starts with unlocking bootloader and so on the process continue with rooting and at last you can end up flashing the custom ROM on your device.

So, we get to know that unlocking bootloader is the permission for users to make different level of customization from their end.

Benefits of Unlocking Bootloader
  • Gaining the root access
  • Allows to flash custom recovery
  • Installing different custom ROMs

  • This process may void the phone warranty
  • The performance of your phone might also get affected
  • The process might brick your phone, if anything goes wrong
  • Might become a reason for disturbing the security of your smartphone
  • You might also lose the data available on your phone storage.

Methods To Unlock Bootloader on Samsung Smartphones

unlocking bootloader on samsung galaxy

Here, we will use different methods to unlock bootloader on your device. For Samsung smartphones, a popular application known as Odin tool can perform many tasks. But unlocking bootloader is something different and Odin tool is not compatible to do so.

Therefore, we will try to do it manually!


  • You need to charge your smartphone to at least 70% or above.
  • Grab the original USB cable of your smartphone.
  • Make a complete back-up of your important data.
  • Download Samsung USB Drivers.
  • Download ADB and Fastboot tool. Windows and MacOS

Method 1: How To Unlock Bootloader on Samsung Galaxy Using Settings

Follow the below steps using the default settings of your smartphone!

Step 1: Go to Settings on your Samsung Galaxy.

Step 2: Enable the developer option. To do that, go to About Phone->Build number. Tap on the build number several times until you see the Developer option enabled.

Step 3: Now, get back to the main settings and tap on the "Developer" option.

Step 4: In Developer option, locate the OEM Unlock option and turn it ON.

Finally! Yes your job is done here! You have successfully unlock bootloader on your Samsung Galaxy smartphone.

Method 2: How To Unlock Bootloader on Samsung Galaxy Using Computer

Step 1: Make sure, that the Developer option and OEM unlock is enabled on your smartphone as discussed above in Method 1.

Step 2: Besides this, also enable the USB Debugging option for connectivity.

Step 3: Now, download and install the ADB & Fastboot tool provided above in the pre-requisite section.

Step 4: Connect your smartphone to a computer using the original cable.

Step 5: After the successful connection, turn your smartphone OFF. Enter into the fastboot mode using Power, Volume down, and Home buttons simultaneously for several seconds until your smartphone enters into fastboot mode.

Step 6: Open the ADB & Fastboot folder on your computer and then right click anywhere in the blank area while holding the shift key and open the Command Prompt.

Proceed with the following commands!

adb devices

Step 7: proceed with tapping on OK, if you get any pop-up on your Samsung Galaxy. Now, type the command below:

adb reboot bootloader

Step 8: By executing the above command will enter your phone into bootloader mode. Make sure to check the bootloader is locked on unlocked on your smartphone. Now, type the below command:

fastboot devices

Step 9: If your device is successfully connected, then the corresponding number will be shown on the ADB & Fastboot interface. Finally, type the following command and press enter to execute:

fastboot oem unlock

Step 10: That's it, you have successfully unlock the bootloader on your Samsung Galaxy smartphone. Now, reboot your phone by typing the command below:

fastboot reboot

Wait for the booting process to complete and you are done!

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