How to unlock bootloader on Samsung Galaxy Phones

Android is an open-source platform which means the possibilities of customization is just endless. Nowadays rooting an Android device has become so simple and easy. The first thing a user may need to do before rooting is to unlock the bootloader of the smartphone. Here in this guide, we will look through different ways to unlock bootloader on Samsung Galaxy Phones.

Android devices are always developer-friendly, custom developers love this brand so much. Whereas so many custom firmware, mod files, etc are available for Android devices. Android lovers or geeks always want to highly customize their devices so that they can easily install any third-party firmware or root or custom recovery. Now, the customization part starts from the bootloader unlocking process.

What is Bootloader and Bootloader Unlock?

A Bootloader is a code that initiates before any Operating System starts to run on a mobile or a computer. Bootloaders basically give instructions to the hardware to boot whether operating system or recovery mode before a boot logo appears. All the bootloaders on Android devices are locked by default due to privacy or security measures.

Most of the Android smartphones come with a locked bootloader. It prevents users to modify the root settings of the device. Users can’t flash any third-party ROMs or Mods while the bootloader is locked. It is a security feature on Android smartphones.

unlock bootloader on Samsung Galaxy Phones

Advantages of Unlocking Bootloader

  • Install Custom Recovery
  • Install desire Custom ROM
  • Root android using magisk or supersu

Disadvantages of Unlocking Bootloader

  • The device warranty may void
  • All the data will be erased
  • If something goes wrong following the steps, it may brick your device
  • A device (without locked bootloader) is prone to hackers

Warning

RootMyGalaxy.net will not be held responsible for any kind of damage that occurred to your device while following this tutorial. Do it at your own risk.

Pre-requisites

Bootloader Unlocking on Samsung Galaxy Devices (2020 methods)

#1 Method: Enable OEM Unlocking

First, enable Developers Options on your device and then USB Debugging.

  • Go to the device Settings > About Phone > Software Information > More.
  • Tap on the Build Number quickly for 7 times. The Developer Options will be enabled.
  • Next, go back to the main Settings menu > Scroll down and tap on Developer Options.
  • Turn on the OEM Unlock toggle. If prompted, tap on Enable to confirm it.
  • Before proceeding take a full backup
  • Finally, Switch off your handset and press Power + Volume Down together > connect your handset to the PC/Laptop using a USB cable.
  • Press and hold the Volume Up button on your phone to unlock the bootloader. Done!!!
Note: For newer galaxy devices you may need some extra steps, follow the steps below
  • Now your bootloader is unlocked but the new “Vaultkeeper” service will still prevent you to flash any ROM or other files.
  • So you have to make sure that the new Vaultkeepr allow it. To make sure, do the initial setup as the device’s data are now erased after unlocking the bootloader (your phone must be connected to the internet (mobile data or WiFi).
  • Now go to “Settings” > “Developer options” and make sure that the “OEM Unlocking” toggle is turned ON and greyed out. Done!!

#2 Method: Using ADB and Fastboot via PC

  • Boot your device into bootloader mode.
  • Once the device booted into Bootloader mode, connect your device with a PC or Computer.
  • Now Go To The ADB Folder and open the Command window there (To Do so,  “Shift + Right click” on any empty white space inside the folder and then select “Open command window here” from the context menu) or You can just simply type “CMD” in the address bar to launch the command window.

  • The Command Prompt window will open.
  • Type the following command and hit Enter to check whether your connected device is running in bootloader/fastboot mode or not:
fastboot devices

  • Now, you will see a device code which means your device is connected to bootloader mode.
  • Type the following command and press Enter to unlock the bootloader easily:
fastboot oem unlock

  • Wait for the process to complete.
  • Once done, you can either reboot your device manually or type the below command and hit Enter:
fastboot reboot
  • That’s it. Your handset bootloader is now unlocked.

Keep visiting the blog for more info.

Rootmygalaxy a.k.a RMG was started in 2015 with a solo goal of Helping users with easy How-to guides. Slowly the website started sharing exclusive Leaks and Tech News. In these 5 years, we have been credited by the likes of Forbes, CNBC, Gizmodo, TechCrunch, Engadget, Android Authority, GSM Arena and many others. Want to know more about us? Check out our About Us page or connect with us Via Twitter, Facebook, Youtube or Telegram.

An NIT Rourkela Graduate in CS, Blogger, Android Geek, and a Tennis Fanatic. I have been writing about Android OS for Last 8 years.

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