Go to Settings > About Phone and tap Build Number seven times.
fastboot oem unlock
This article will serve as your complete encyclopedia. We will cover the legal commands (Fastboot/ADB), the difference between OEM unlock and "free" third-party tools, the risks involved, and step-by-step instructions for major brands like Google Pixel, OnePlus, Xiaomi, and Motorola. unlock bootloader command free
Once your device is connected to a PC via USB and in (usually by holding Power + Volume Down during boot), use these standard commands in your terminal: Go to Settings > About Phone and tap
(Fastboot command)
Xiaomi requires you to apply for unlock permissions via their free "Mi Unlock Tool" (Windows only). The command is handled by their software, but the backend process uses the same protocol. Once your device is connected to a PC
Arm yourself with the terminal, download Platform Tools directly from Google, and reclaim your device. The gatekeeper stands no chance against a well-typed command.