I have a DSTT, I formatted with the Panasonic Tool and used the last RetroGameFan firmware, I also tried the patch available for YSMenu in the 1st post, but nothing, it gives to me " errcode=-4 "
:/
@Xdqwerty, Osu! Tatakae! Ouendan! is the Japanese version of the game, different settings/characters/songs but otherwise identical mechanics. I played that before I knew about Elite Beat Agents lol. Both fantastic games https://en.wikipedia.org/wiki/Osu!_Tatakae!_Ouendan