games can not be added to these players, you should have only tetris, is that right?
a for modding the graphics, that involves having the original firmware for your player so you can edit it, and ther in lies the cause of many a bricked player
unless you have the original firmware there is nothing you can do about the look of the player
also taking another look at the player ITS definately not an onda, different buttons layout on your
and cdr king are quite a big site and have many downloads for players, yours is in the list here
http://www.cdrking.com/local/downloads/index.php
but there is no firmware for it, you should email them and see