Well i've read that any bios should fine, ie if your using an ntsc version then that will play pal games and vice versa if your using a pal bios then it should play ntsc games as well. Graphical glitches or issues are not related to the bios. You will need to fiddle about with the settings on frame skip and cycle mult. Also have a look on here to see what games work best with which settings: http://maemo.team16.ru/index.php?page=5&list=2 Not many listed there but you can try games that arent listed and post your results up. Hope that helps. Happy Gaming!