fabiolelis, I have placed the firmware on my player and have found the same problem. I think the firmware has been modifies using the "Firmware Modify" program which seems to have a bug that removes certain features. As this firmware seems to be compatible with my player I suggest you try using my original firmware dump
Here:
http://www.mympxplayer.com/dload.php...le&file_id=186
If you want a diffent themed version try Here:
http://www.mympxplayer.com/dload.php...le&file_id=138
Let me know if this fixes the problem.