fernandipis , i've not heard of this brand of processor chips before. But anyway, it seems that the v9.xx firmwares might work for you as in your first post.
So i'll suggest that you try all the v9.xx firmwares here
http://www.mympxplayer.org/actions-9...ware-dc37.html
As there is no way to tell which firmware would work for your player, you'll need to try all those for your screen size until you get a working one.