morrislee , Waterlily is a firmware modifying tool. It can be downloaded here
http://www.mympxplayer.org/waterlily...-mb-df256.html
Try playing around with the contrast/brightness setting.
Regarding the games, you'll need to merge firmwares which contains more games into a compatible firmware for your player. It would not be easy to identify which firmware has more games than the others.
However, it is not recommended as your player might just go dead again.