Hi Martin
Sorry to say all I can suggest is try every firmware you can of RK2608, with touch screen and looks like your player.
Has the bad block problem gone now? can you still reload another firmware?
Have you tried this firmware?
http://www.mympxplayer.org/sorry-but...r-vp49827.html.
The problem is there don't seem to be many players around like yours, it's gonna to be near impossible to find a firmware that works.