Steps:-
1. Simply download the zip file from below link.
2. unzip the file you can see a folder name "MiuiExtraPhoto".
3. use any root file explorar and grant root access permission.
4. copy the Folder "MiuiExtraPhoto" to System priv-app and paste.
5. reboot your device all done. Enjoy Studio lightning and blur control feature.

Download link:- https://drive.google.com/open?id ... F5RiIeqfSWU4m6FuRiM