At this point, you should connect your phone to your PC and launch Odin. While the official unlock involves using Odin to flash custom binaries, the process is model-specific. For many Exynos variants, a simple confirmation is required. A warning screen will appear, informing you of the risks of unlocking the bootloader. Press the key to confirm and initiate the unlock process. Your device will then reboot, performing a full factory reset. Upon restart, the bootloader is officially unlocked.