5 Steps to Remove Bootloader Unlock Warning on Samsung Phones

Remove bootloader unlock warning on Samsung phones is a crucial step for users looking to customize their devices. However, this process often results in an annoying bootloader unlock warning message appearing every time you start your phone. This warning states, “The phone is not running Samsung’s official software. You may have problems with features or security, and you won’t be able to install software updates.” If you want to remove this message, follow these 5 simple steps to ensure your device boots smoothly without any interruptions.

Why Does the Bootloader Unlock Warning Appear?

When you unlock the bootloader on your Samsung phone, you’re essentially bypassing the security measures set by the manufacturer. This process allows for deeper customization, such as installing custom ROMs, rooting the device, and more. However, Original Equipment Manufacturers (OEMs) like Samsung implement these warnings to discourage users from tampering with the system, as it can lead to potential security risks and void the warranty.

The warning message serves as a reminder that your device is no longer under Samsung’s official software protection. While this might seem like a minor inconvenience, for many users, it’s an unwelcome reminder every time they boot up their phone. Fortunately, there is a way to remove bootloader unlock warning.

5 Steps to Remove Bootloader Unlock Warning on Samsung

To remove bootloader unlock warning, you’ll need to follow these detailed steps. Make sure you back up all your data before proceeding, as this process involves flashing files and making system changes.

Remove Bootloader unlock warning
Remove Bootloader unlock warning

Step 1: Prepare Your Device and Download Required Tools

Before you start, ensure you have a complete backup of your device. This step is crucial as the process involves altering system files, which could lead to data loss if not done correctly. Once your backup is complete, download the Universal Exynos Boot Logo Changer and extract it to your computer. This tool will replace the bootloader warning image with a more neutral one or even your custom logo.

The boot logo changer contains a replacement image file. After extracting the relevant files, move this image file into the firmware folder. You will later compile everything into a new ZIP file for flashing.

Step 2: Download and Extract Stock Firmware

Next, download the stock firmware for your specific Samsung device. You can find this firmware on websites like the Frija Tool or SamFW. Once downloaded, extract the firmware files on your computer. Locate the BL (bootloader) file, as this is where you’ll be making the necessary changes.

To extract the BL file, use the Modified 7Zip for LZ4 tool. Within the BL file, locate and extract the param.bin.lz4 file, which you will then extract further to obtain the param.bin file. This file is crucial as it contains the bootloader images, including the one displaying the unlock warning.

NOTE: For rooted devices, extract the param.bin via the below commands: 

adb shell
su
su -c dd if=/dev/block/bootdevice/by-name/param of=/sdcard/Download/param.bin

Step 3: Replace the Bootloader Warning Image

Now that you have the param.bin file, the next step is to replace the bootloader warning image. Open the Universal Exynos Boot Logo Changer folder you extracted earlier and find the logo.jpg file. This is the replacement image that will remove bootloader unlock warning.

Replace the existing image in the param.bin folder with this logo.jpg file. Once the replacement is done, save all the contents, including the new logo.jpg file, into a new ZIP file. This ZIP file will be used to flash your device, effectively remove bootloader unlock warning.

Step 4: Flash the Modified Firmware to Your Device

With your modified firmware ready, it’s time to transfer the ZIP file to your Samsung device. Connect your phone to your computer and transfer the ZIP file to a location you can easily access.

To flash the modified firmware, you’ll need to boot your device into TWRP Recovery mode. You can do this by using the command:

shellCopy codeadb reboot recovery

Once in TWRP Recovery, go to the Install option, select the ZIP file you just transferred, and swipe right to flash it. This process will replace the bootloader unlock warning image with the new one, effectively removing the warning.

Step 5: Reboot and Verify

After the flashing process is complete, select System and then choose Reboot. Your device will restart, and if everything was done correctly, the bootloader unlock warning message should no longer appear. Instead, you’ll either see your new boot logo or no warning at all, depending on the replacement image used.

Congratulations! You’ve successfully remove bootloader unlock warning from your Samsung phone. Your device should now boot straight into the operating system without any interruptions.

Final Thoughts

While unlocking the bootloader on your Samsung phone offers significant customization options, it also comes with its challenges, including the persistent bootloader unlock warning. However, by following these 5 steps, you can easily remove bootloader unlock warning and enjoy a smoother user experience.

Remember, the steps outlined above involve modifying system files, so proceed with caution. Always ensure you have a backup of your data, and if you’re unsure about any step, seek help from forums or communities that specialize in Samsung devices. This way, you can customize your device to your liking without any unwanted interruptions.

If you have any questions or need further assistance for remove bootloader unlock warning, feel free to ask in the comments section below. We’re here to help you every step of the way.




Brian Clark
Brian Clark is the founder of Copyblogger, Further, an educational community that provides smart strategies for freelancers and solopreneurs.

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