How to Unlock Bootloader on Samsung Galaxy A71? OEM Unlock!

Samsung Galaxy A71 is a popular smartphone model known for its impressive features and performance. However, some users may want to unlock the bootloader on their device to gain more control and customization options. This article will guide you through the process of unlocking the bootloader on Samsung Galaxy A71, also known as OEM Unlock. By following the steps outlined below, you can unleash the full potential of your device and explore various customizations.


What is Bootloader and Why Unlock it?

Before diving into the process of unlocking the bootloader, it is essential to understand what a bootloader is and why you might want to unlock it. The bootloader is a program that loads the operating system into the device’s memory during the boot-up process. It is responsible for verifying the integrity of the operating system and initializing essential hardware components.

Unlocking the bootloader provides you with administrative access to your device’s system files and allows you to install custom ROMs, root your device, and perform various system-level modifications. By unlocking the bootloader, you can customize your Samsung Galaxy A71 to suit your preferences and enhance its performance.

Step-by-Step Guide to Unlock Bootloader on Samsung Galaxy A71

Unlocking the bootloader on Samsung Galaxy A71 requires a series of steps that must be followed carefully. Before proceeding, ensure that you have backed up all your important data, as the process may erase your device’s memory. Here is a detailed guide to unlocking the bootloader:

Step 1: Enable Developer Options

To begin, you need to enable Developer Options on your Samsung Galaxy A71. Follow these steps:

  1. Go to the “Settings” menu on your device.
  2. Scroll down and tap on “About phone.”
  3. Find the “Build number” and tap on it seven times. You will see a prompt indicating that you are now a developer.

Step 2: Enable OEM Unlocking

After enabling Developer Options, you need to enable OEM Unlocking. Here’s how:

  1. Go back to the “Settings” menu.
  2. Scroll down and tap on “Developer options.”
  3. Find the “OEM unlocking” option and toggle it on.
  4. Read the warning message carefully and confirm your decision.

Step 3: Boot your Samsung Galaxy A71 into Download Mode

Next, you need to boot your device into Download Mode. Follow these steps:

  1. Power off your Samsung Galaxy A71.
  2. Press and hold the Volume Down button, Bixby button (if available), and Power button simultaneously.
  3. Release the buttons when you see a warning message on the screen.
  4. Press the Volume Up button to enter Download Mode.

Step 4: Connect your Device to the Computer

Once your device is in Download Mode, connect it to your computer using a USB cable. Ensure that you have installed the necessary USB drivers for your device on your computer.

Step 5: Download and Install Odin Tool

Odin is a widely used tool for flashing firmware, kernels, and other modifications on Samsung devices. Download the latest version of the Odin tool from a trusted source and install it on your computer.

Step 6: Download the Bootloader Unlock File

Visit the official Samsung website or a trusted third-party website to download the bootloader unlock file specific to your Samsung Galaxy A71 model. Make sure you download the correct file to avoid compatibility issues.

Step 7: Extract the Bootloader Unlock File

Extract the downloaded bootloader unlock file to a convenient location on your computer using a file extraction tool like WinRAR or 7-Zip.

Step 8: Run Odin Tool

Open the Odin tool on your computer by double-clicking the executable file. You should see the Odin tool interface with various options and buttons.

Step 9: Enter Download Mode again

If your Samsung Galaxy A71 has exited Download Mode during the previous steps, repeat Step 3 to enter Download Mode again.

Step 10: Connect your Device to Odin

Connect your Samsung Galaxy A71 to the computer using the USB cable. Odin should recognize your device, and the “Added” message will appear in the Odin tool interface.

Step 11: Select Bootloader Unlock File in Odin

In the Odin tool interface, click on the “AP” button and navigate to the location where you extracted the bootloader unlock file. Select the file and click “Open” to load it in Odin.

Step 12: Start the Bootloader Unlock Process

Ensure that all necessary options in Odin are correctly configured. Make sure the “Auto Reboot” and “F. Reset Time” options are checked. Double-check that no other options are selected or deselected unless you have specific requirements.

When you are ready, click on the “Start” button in Odin to initiate the bootloader unlock process.

Step 13: Wait for the Process to Complete

During the bootloader unlock process, your Samsung Galaxy A71 will go through several stages. You will see a progress bar in Odin, indicating the progress of the process. Do not disconnect your device from the computer or interrupt the process until it is complete.

Step 14: Boot your Device

Once the bootloader unlock process is complete, your device will automatically reboot. It may take a few minutes for the device to boot up for the first time after unlocking the bootloader.


1. What are the risks of unlocking the bootloader on Samsung Galaxy A71?

Unlocking the bootloader on Samsung Galaxy A71 has certain risks. It can void your device’s warranty, expose your device to security vulnerabilities, and potentially brick your device if not done correctly. Proceed with caution and make sure to follow the instructions carefully.

2. Can I revert back to the locked bootloader after unlocking it?

Yes, it is possible to revert back to the locked bootloader after unlocking it. However, the process may vary depending on your device and the specific method used to unlock the bootloader. It is recommended to research and understand the process thoroughly before attempting to revert back to the locked bootloader.

3. Will unlocking the bootloader erase my data?

Unlocking the bootloader typically erases all data on your device. It is crucial to back up all your important data before proceeding with the bootloader unlock process.

4. Is unlocking the bootloader legal?

Unlocking the bootloader is legal in many countries, but it is essential to check the laws and regulations specific to your region. Some manufacturers and carriers may have restrictions or terms of service that prohibit bootloader unlocking.

5. Can unlocking the bootloader improve the performance of my Samsung Galaxy A71?

Unlocking the bootloader itself may not directly improve the performance of your Samsung Galaxy A71. However, it allows you to install custom ROMs and kernels, which can potentially enhance performance and provide additional customization options.


Unlocking the bootloader on Samsung Galaxy A71 can open up a world of possibilities for customization and exploration. By following the step-by-step guide provided in this article, you can successfully unlock the bootloader on your device and gain more control over its functionality. Remember to proceed with caution and take necessary precautions to avoid any potential risks or issues. Unlock your Samsung Galaxy A71’s bootloader and unlock the true potential of your device.

FAQs After The Conclusion

1. Can I install custom ROMs after unlocking the bootloader?

Yes, unlocking the bootloader allows you to install custom ROMs on your Samsung Galaxy A71. Custom ROMs are modified versions of the Android operating system that offer additional features, performance improvements, and a unique user experience.

2. Will unlocking the bootloader void my warranty?

Unlocking the bootloader typically voids the warranty provided by the manufacturer or carrier. It is important to understand the consequences and consider whether the benefits of unlocking the bootloader outweigh the potential loss of warranty coverage.

3. Can I still receive software updates after unlocking the bootloader?

Unlocking the bootloader does not prevent you from receiving official software updates from Samsung. However, installing custom ROMs or modifications may require manual updates or may not be compatible with official updates. It is important to research and choose custom ROMs that offer regular updates and support.

4. How can I check if the bootloader on my Samsung Galaxy A71 is unlocked?

To check if the bootloader on your Samsung Galaxy A71 is unlocked, you can boot your device into the bootloader mode and look for a message indicating the bootloader status. Alternatively, you can use third-party tools or apps that provide information about the bootloader status of your device.

5. Are there any alternatives to unlocking the bootloader for customization?

If you do not want to unlock the bootloader on your Samsung Galaxy A71, there are alternative methods for customization. These include using third-party launcher apps, installing custom widgets and icons, and using various customization options available within the Android operating system.

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