If you are looking for specific, non-official tools to unlock the bootloader of a Huawei device from 2018, could you clarify the exact model number? The methods differ significantly between P20 (EMUI 8/9) and P20 Pro, and I can suggest safer alternatives or methods that do not require paying for proprietary services.
Note that in mid-2018, Huawei officially stopped providing bootloader unlock codes. ADB tools allow you to modify app states and system settings, but they cannot unlock your bootloader or allow you to flash custom ROMs (like LineageOS) unless you use paid third-party hardware testpoint exploits. Conclusion open adb huawei 2018 tool
Select Background settings -> USB port settings -> USB Mode . Select Google Mode: Choose Google Mode . If you are looking for specific, non-official tools
Go back to the menu and open the newly revealed Developer options . 3. Turn on USB Debugging and HDB Inside Developer Options, toggle USB debugging to ON . ADB tools allow you to modify app states