no need unlock firmware

 1. Redmi 8 _Olive

https://drive.google.com/file/d/1PQReK2MvS9ffxHAEi12e2QafliR98NYM/view?usp=drive_link

2. Redmi 8A _ Olivelite

https://drive.google.com/file/d/1DJ4vJhxNBKDUmwcW0yinfWhFHSVdy6zD/view?usp=drive_link

3.

Redmi 9T _ Lime

https://drive.google.com/file/d/1wm-2VPoplWWGLqIcMHpmJSxBr120Qlh9/view?usp=drive_link

4. Redmi 7A_Pine

https://drive.google.com/file/d/1SFfW5XWyXHDSVQxTBShup6MfhaQUGkQY/view?usp=sharing