Hi Matsca
If your player is DEAD then you will need to try firmwares and hope you find one that works!
There are some more firmwares for this player type here:-
http://www.mp4nation.net/forum/viewtopic.php?f=6&t=1967
Also a very good recovery guide :-
http://www.mympxplayer.org/recovery-...o28-df891.html
Dont' pay any attention to the version numbers, just try one which is most like your player, there are no upgrades.