How To Unlock Bootloader on Samsung Galaxy A05s?

Want to unlock the bootloader on your Samsung Galaxy A05s? Here’s the step-by-step guide that will help you get your job done.

If you get bored with the stock firmware of your smartphone and want to play around with more customization, then you will need to get your device rooted. But you can’t be able to root your device before unlocking the bootloader.

unlock bootloader

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 need bootloader instructions to start the boot process and operate the recovery mode.

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

But as we know, Android is open-source and that gives more power and benefits to users to customize their smartphones with endless possibilities.

Therefore, Android also provides users an alternate route to customize their smartphones.

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.

How To Unlock Bootloader on Samsung Galaxy A05s?



  • 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 Galaxy A05s USB Drivers.
  • Download ADB and Fastboot tool. Windows and MacOS

Note: Unlocking Bootloader will wipe all the data on your smartphone! So better to take a complete back-up of your important data.

How To Enable Developer Option and OEM Unlock on Samsung Galaxy A05s

To enter the process of unlocking, you are required to enable the developer option first and then USB Debugging and OEM unlock.

  • Go to Settings on your phone.
  • Locate the About Phone and then tap on Software information->Build number several times until the Developer option is enabled.
  • Get back to the main Settings and then scroll down to the bottom and tap on Developer Options.
  • In Developer options, first, enable the OEM Unlocking.
  • After that, locate the USB Debugging and enable it.

Method 1: Unlocking Bootloader on Samsung Galaxy A05s Using ADB & Fastboot Commands

Step 1: Download and install Samsung Galaxy A05s USB drivers from the above pre-requisites section.

Step 2: Grab the original cable of your smartphone and then connect it to your PC.

Step 3: Turn your phone OFF Completely.

Step 4: Now, extract the ADB & Fastboot folder and right-click anywhere in the blank space while holding the shift key to open the command windows or power shell windows.

adb fastboot folder

Step 5: Proceed with typing the following command to check whether your smartphone is detected by the computer successfully:

adb devices

Step 6: Now, type the following command to enter bootloader mode:

adb reboot bootloader

Step 7: To unlock the bootloader, type in the following command and press enter:

fastboot flashing unlock

Step 8: At last, when the process is complete, type in the following command:

fastboot reboot

Method 2: Unlocking Bootloader on Samsung Galaxy A05s Using Download Mode

Press the Power button to turn your phone OFF.

Boot your Samsung Galaxy A05s into Download Mode.

Press and Hold the Volume UP button until you see the window that displays the Bootloader unlock information.

Finally, again press the Volume UP button to continue with "Yes" to start the bootloader unlock process.

After that, you will be prompted with a warning message regarding the data loss, simply confirm to continue the process.

Wait for the process to be complete. Once, it is done your phone will be rebooted.

When it boots up again, It will be in an unlocked bootloader state and you will also get notified at the start-up with a bootloader unlocked message on your phone screen.

That's it, your Samsung Galaxy A05s is in an unlocked bootloader state.

How To Boot Samsung Galaxy A05s Into Download Mode?

  • Press and Hold the Power button until the Samsung Logo appears on the screen.
  • Once, the logo appears Press and hold the Volume Up and Volume Down buttons simultaneously.
  • Connect your phone to a computer or laptop using the original cable while entering into download mode.
  • When a warning screen appears, release all the buttons and choose "OK" with the Volume UP button to continue.

Brilliant! You are in the Download mode now.

How To Boot Samsung Galaxy A05s Into Fastboot Mode?

  • Press and Hold the Power and Volume Down buttons simultaneously until the phone gets OFF completely.
  • After it shuts down, hold the Power button, and press the Volume Up button.
  • Now, when you get into the Android Recovery Mode, simply select the "Reboot To Bootloader" option using the Volume UP/Down and Power buttons.

Brilliant! You are in the Fastboot Mode now.