How to Fix File Explorer Permissions on Any Android Devices

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Fix File Permissions on Android Devices

Quick Steps for Advanced Users:

Copy the file/apk that you want to fix permissions of and copy it to your devices’ internal or external SD Card.
Now copy and paste the file/apk to the location suggested by the developer. If it is an app, push it to system/app directory.
Set permissions to rw-r–r–
Finally, reboot your phone or tablet device.
Please note that if you assign wrong set of file permissions while copying an app or file on your rooted Android device, your phone might stuck on a bootloop. To fix this error, do as follows:

Pull out your device’s battery and boot it into CWM or TWRP recovery mode.
Go to “advanced” option in recovery and select “fix permissions”.fix-Permissions-in-CWM
Then “wipe dalvik cache”.
Go back to main menu and select “reboot system now”.

Source: Youtube