After a reflash I transfer deb files including filebox to N9 from PC. Also a txt file which contains path to filebox. Next I will enable dev mode. Then from terminal I install filebox using the path saved in txt file (dpkg -i path). Txt file can be found from Documents app. From filebox I intstall other apps.

You don't need the txt file if you know the path already. Drawback is you still have to enable dev mode to use terminal.

reflash and no more abuse your phone, please