How to Unlock the bootloader Your Samsung Running Android 9 or higher

Users may have their own reasons for unlocking the bootloader of the Samsung devices. While, Samsung running Android 9.0 pie or higher need to use another method to unlock the bootloader compared to the previous Samsung devices.

How to unlock bootloader of Samsung with Android 9.0 or higher

Getting Started: Preparation

• Samsung Device with Android 9 or higher
• USB Cable (the original one recommended);
• Install the adb and fastboot. Just download the Google SDK Platform-Tools package for using the adb and fastboot. on your Windows. And Terminal for Mac. The Platform-Tools download websites: https://developer.android.com/studio/releases/platform-tools

Begin to Unlock the Bootloader

• First to backup all your files, photos, and vedios in your Samsung device. Bootloader unlocking will wipe your data.
• Allow bootloader unlocking in Developer options → OEM unlocking;
• Reboot your device to download mode. Using the fastboot command: adb reboot download.
• Long press volume up to unlock the bootloader.

Just when you think the bootloader is unlocked, it is actually not! Samsung introduced VaultKeeper, meaning the bootloader will reject any unofficial partitions before VaultKeeper explicitly allows it.

• Repeat the above steps. Connect the device to internet in the setup!
• Enable developer options, and confirm that the OEM unlocking option exists and grayed out! The VaultKeeper service will unleash the bootloader after it confirms that the user has the OEM unlocking option enabled.