What does friendly or official mean in UHD drive?

UHD Official Drive: A drive designed to compatible with UHD Blu-ray.

UHD Friendly Drive: This drive is not specifically designed for UHD Blu-ray, but it still can be used on such discs after downgrading the firmware.

Do I need to downgrade the firmware since my UHD drive can work with Leawo’s products?

You don’t have to downgrade/flash the firmware as your UHD drive can work with Leawo’s products perfectly.