In this Guide, we are going to share “How to Remove Bootloader Unlock Warning on Samsung Phones.” Booting the bootloader on Samsung phones opens up a world of endless options for customization, but it throws in a rather inconvenient bootloader unlock notice. Each time the device starts, this message is displayed: ‘The phone is not running Samsung’s official software, For some features you may experience issues, for others it will be slow, you may encounter security issues, and you cannot install updates. ’ In this guide, we will detail on how to disable this message.

Prerequisites and Preparation

First, it is recommended to make a full copy of all your data just in case. This involves the manipulation of system files, and this comes with a lot of danger of losing critical data.

Tools and Downloads Required

1. Universal Exynos Boot Logo Changer
2. Common firmware for your device (Available for download through Frija Tool or SamFW website)
3. LZ4 for Modified 7Zip tool
4. TWRP Recovery

Step-by-Step Instructions

Step 1: Download and Extract the Boot Logo Changer

1. First of all, you need to download the Universal Exynos Boot Logo Changer and unzip it on your computer.
2. Search for the replacement image file in the extracted folder. This file will be used in place of the current bootloader warning image.

Step 2: Downloading and Decryption of the Stock Firmware

1. First of all, you will need to obtain the stock firmware for your particular Samsung device.
2. Using the modified 7Zip for LZ4 tool, extract the firmware files to your computer.
3. Locate the BL file and extract to obtain the param.bin.lz4 file, and then unzip to get param.bin.

Step 3: Modify the param.bin File

For rooted devices, you can extract the param.bin file using the following ADB commands: bin file using the following ADB commands:

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

Step 4: Erase Bootloader Image

1. Move the logo.jpg file from the Universal Exynos Boot Logo Changer zip to the folder containing the extracted param.bin
2. Upload a new logo image file in place of the old one.jpg file.

Step 5: Repack the Modified Files

1. Save all contents, including the new logo.jpg file, into a ZIP file.
2. Copy this ZIP file to your Samsung device.

Step 6: Flash the Modified Files Using TWRP

1. Boot your device into TWRP Recovery mode using the following command:

adb reboot recovery

2. In TWRP, navigate to the Install section, select the ZIP file you transferred, and swipe right to flash it.
3. Once the installation is complete, go to the System section and select Reboot.

Conclusion

After following these steps, your Samsung device should boot without displaying the bootloader unlock warning message. If you encounter any issues or have questions, please leave a comment below, and we will assist you promptly.