Thank you for reply!
I've extracted a firmware from a player looks similar, its v 3.5.35 F/W but my player is blind (white screen with black lines)

but all other fonctions working great!
If you wanna try the dump file i've extracted you can get it from here
Here
its from a player without FM radio, but you can try it, and if it works you can merge it with a full 3.5.35 firmware, maybe you'll get your player work again!
Thnx!