Unlocking Bootloader on Samsung Galaxy S8+

On this page, you will learn to unlock bootloader on Samsung Galaxy S8+ and if you see Oem unlock option in developer options then you don’t have to follow the rest of the tutorial.

Unlocking bootloader in Samsung S8+ made easy and you can simply enable developers mode where you can perform OEM unlock. In this article, you will learn how to unlock bootloader on Samsung Galaxy S8+ smartphone. You will be able to unlock bootloader on Samsung Galaxy S8+ after you are done following this guide.

For some reasons, I don’t prefer you to unlocking bootloader because you might end up voiding your Samsung Galaxy S8+’s warranty. That’s the main reason people unlock bootloader not worrying too much about the warranty is that they are going to get a newer version of their Android smartphones. You can use this guide only on Samsung Galaxy S8+ no other Samsung smartphone but if you have different Samsung phone, then you should try installing WinDroid Toolkit.

Bootloader is the heart of Android Rooting because bootloader allows you to install Custom ROMs in your Android device. As Custom ROM is not as the same as original OS (Stock ROM). And Custom ROM can cause your phone and already installed apps to stop working exactly how it should work.

Things you should remember while unlocking bootloader

Let me tell you that on unlocking the bootloader will void your phone's warranty. Weather it's an Official Firmware or Unofficial Firmware on unlocking the bootloader on your device, the phone manufacturer will not be able take any guarantee of your device to work properly.

The methods can be different for unlocking bootloader on Android smartphones depending on device manufacturer.


  • Make sure your phone is 80% charged (If you phone goes dead in the middle of the process, you might end up bricking up your device)
  • USB cable
  • Take necessary Android backup
  • USB drivers installed on your computer
  • Install Samsung Kies 3 (that’ll install necessary drivers)

Method #1: How to unlock Bootloader on Samsung Galaxy S8+

OEM Unlock in Samsung Galaxy S8+

OEM unlock is for people who want to root or install custom recovery image on their Android smartphone. This option should be enabled from Android device first before they proceed any further. In other words, it is known as Bootloader and users who have rooted their smartphone before must be familiar with the term "unlocked bootloader."

How to Step by Step to OEM Unlock

Follow the steps:

  • Go to Settings → Tap on Build number 7-8 times
  • This will make developers options available inside Settings
  • Now, if you have OEM unlock toggle available in your developer's options then you are lucky because it depends on variants

OEM unlock Samsung Galaxy S8+

  • You can one-tab unlock bootloader (OEM unlock) on your Samsung smartphone
  • Tapping over blue toggle sign will unlock bootloader not all Samsung smartphones will have it

Method #2: How to unlock Bootloader on Samsung Galaxy S8+

Follow the steps to unlock bootloader on Samsung Galaxy S8+:

How to Enable USB Debugging on Samsung Galaxy S8+ (2017)

To enable the USB Debugging, follow the steps:

Go to your Settings -> About Phone -> Now Tap on the Build Number 7-8 times then you will see message appeared on the screen i.e., "Developer option enabled"

From Settings -> Developer options -> Enable USB Debugging 

  • Download Modaco’s Superboot files (9 MB) (store them to your computer)
  • Extract the .zip file on your computer
  • Connect your Samsung Galaxy S8+ to your PC via USB cord
  • Open extracted folder i.e., superboot folder
  • Run fastboot-modaco-windows.exe inside it

Unlock bootloader on Samsung Galaxy S8+ Fastboot windows

  • Now, select open command window here (Ctrl + R)
  • For Windows: In the directory, open Command Prompt (Shift + Right-click > Open Command Prompt)

Shift Command Prompt in Windows 10

  • For Mac and Linux: Use Terminal to navigate to the ADB / Fastboot directory
  • In the command prompt, type the following and hit enter:

adb-windows reboot bootloader (and wait for the device to reboot)

After the device is rebooted run this command that will unlock oem unlock (unlock bootloader in Samsung Galaxy S8+):

fastboot-windows oem unlock

Congrats, you have successfully unlocked bootloader on Samsung Galaxy S8+.

NOTE: You should understand one thing that your smartphone warranty will be void on unlocking bootloader on your Samsung Galaxy S8+. Read the disclaimer and don’t skip steps.


  1. How long should the initial command prompt take? I ran it last night and my phone is still sitting on “Downloading… Do not turn off the target”

  2. For folks lacking common knowledge on phones, it wouldn’t hurt to include that “THIS WILL NOT WORK ON SM-G950U DEVICES” because this will not work on basically anything running a snapdragon processor. It won’t hurt to try it, it’ll just waste the amount of time that it takes for you to forget to pay the electric bill.

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