almal , what you'll need to do now is to try all the v3.5.35 and v3.5.37 firmwares here
v3.5.35
http://www.mympxplayer.org/actions-3535-dc15.html
v3.5.37
http://www.mympxplayer.org/actions-3537-dc16.html
As there is no way to tell which firmware would work with your player, you'll need to try all those for your screen size one by one until you get a working firmware.
There are many v3.5.xx firmwares, so you stand a better chance at recovering. good luck.