This is the you searched for. However, the exact command varies by manufacturer.
Only re-lock if you are absolutely sure the device is running 100% stock firmware; otherwise, you risk bricking the device.
Once in bootloader mode, verify the fastboot connection: unlock bootloader command free
Most straightforward. No tokens, no waiting.
: Many manufacturers void your hardware warranty the moment you unlock the software protections. This is the you searched for
While illegal in some regions to deny warranty based solely on this, many manufacturers will void your warranty if they detect an unlocked bootloader.
For most modern devices, including Pixel and newer Motorola or OnePlus phones, use the standard flashing command: fastboot flashing unlock Once in bootloader mode, verify the fastboot connection:
: Connect your phone to your PC using an original, reliable USB data cable. Phase 1: Prepare Your Computer and Phone
: Most manufacturers consider an unlocked bootloader a violation of warranty terms.