Once the process completes:
To double-check:
This is the only known working method for Kirin 710 devices like the Y7 Pro 2019, but it requires hardware test-point and paid software. how to unlock bootloader in huawei y7 pro 2019
To communicate with the PC, your phone needs to be in a special mode. Once the process completes:
Ask yourself: Why do I need to unlock the bootloader? To double-check:
If you still want to proceed, know that the Huawei Y7 Pro 2019 is one of the hardest Huawei phones to unlock due to the post-2018 policy. Paid test-point services are your only realistic path.
Do not pay anyone who claims they can provide an "official bootloader code" via email. Those are scams. The only working methods involve physical access to the motherboard (Test Point).