styru, If your player is running 9.0.48 or 9.0.50 version firmware then there is no way to make a backup at present. New tools are being developed for these new firmware but not sure when they will be released.
If your player is running any of the other Action firmware versions then you can use s1fwx which you can download here:
http://www.mympxplayer.org/s1fwx-31-df417.html
There is also a guide here:
http://www.mympxplayer.org/how-to-ex...tool-vt66.html