This guide will explain how to unlock and relock a Samsung Android device's bootloader.
Requirements
Connect to the internet on the device (to make OEM Unlocking visible)
How to unlock Samsung bootloader
Navigate to Settings > About phone > Software information and keep tapping Build Number till you see Developer options is now active
Go back to Settings and scroll down to Developer Options then tap it
Turn on OEM Unlocking
On models like the SM-A605K, you'll get a prompt asking you to confirm wiping the device. If you accept, the device will be wiped and bootloader unlocked
On Models like the SM-A025U, boot into Download Mode then long press the Volume Increase button and follow the instructions to unlock bootloader
How to unlock Samsung Bootloader method 1
How to unlock Samsung Bootloader method 2
How to relock Samsung bootloader
Navigate to Settings > About phone > Software information and keep tapping Build Number till you see Developer options is now active
Go back to Settings and scroll down to Developer Options then tap it
On models like the SM-A605K, once you toggle off OEM Unlocking, you'll get a prompt asking you to confirm wiping the device. If you accept, the device will be wiped and bootloader relocked
On Models like the SM-A025U, boot into Download Mode then long press the Volume Increase button and follow the instructions to relock bootloader
How to relock Samsung Bootloader method 1
How to relock Samsung Bootloader method 2
Important Notice
Ensure to revert to the official stock ROM before relocking the bootloader
Unlocking or relocking the bootloader wipes data so be sure to back up your important stuff first
This post was last modified: 20-11-2023, 12:30 PM by hovatek.
