GL-B1300 disable factory reset

How can I disable factory reset feature on this model? I was able to successfully disable factory reset feature on mango box by deleting reset file from /etc/rc.button but with this one even I deleted reset file from rc.button it still does factory reset. how can I completely disable it ?

Thanks

/etc/rc.button should be the correct file. Now sure why does not work. But you can further check the scripts it calls. It should be like /usr/bin/button_pressed etc.