Extract the Platform Tools zip file to an easily accessible folder (e.g., C:\adb ). On Your Black Shark 2: Open and go to About Phone .
Hold the and Power buttons simultaneously until the Fastboot logo appears. Use the Mi Unlock Tool: Download and open the Mi Unlock Tool on your PC. Sign in with the same Mi account used on your phone. Connect your phone to the PC via USB. The tool should show "Phone connected." Click Unlock . Important: The Waiting Period
Flash a custom recovery to easily manage zip files and system backups.
Press and hold the and Power buttons simultaneously.
: Unlocking the bootloader will perform a factory reset and wipe all internal storage, including photos, apps, and SMS.
Move your received official unlock file (e.g., unlock_bootloader.img ) into the extracted platform-tools folder.
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Turn off Wi-Fi and use . Tap "Add account and device" to link your Mi account to the phone. Enter Fastboot Mode: Power off your phone.
: Ensure you are using mobile data—not Wi-Fi—when tapping "Add account and device" in the settings.
Look closely at the screen when restarting. A small should appear at the top or bottom of the boot splash screen.
The unlocking process triggers a factory reset. It completely wipes all internal storage, including apps, photos, messages, and settings.
With an unlocked bootloader, you gain the ability to modify the phone's software at a deep level. Common next steps include: