This video will show you how to easily change Android system file permissions from read only (R/O) to Read / Write (R/W) and vice versa. Or you can change from 644 to 777 permissions, etc.

App: X-Plore File manager by Lonely Cat Games

Note:
I made this video because someone ask how to change (libmmcamera2_sensor_modules.so) file permission to fix Error on Camera Xiaomi Redmi Note 3 Pro (Snapdragon edition) that using Android Nougat 7.1 custom rom.

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