Persona 4 Arena
has been touched up with a new patch on both PS3 and Xbox 360. "The patch fixes an assortment of general, game balance, and network issues," Atlus reports. It also addresses a bug that prevented some players from getting the "Serious Gamer" achievement, normally obtained by reaching level 30 in online matches.
The "not being good enough at Persona 4 Arena
to reach level 30" issue is not one that can be solved through software patches, we're afraid.