Yeah the game is Korean release but it's the only one that have korean and english, the update until now is the 1.0.1 and it's lovely with lot of stories from U.C. universal century timeline (fistr grandaddy Gundam etc.) and i'm if you could help to find those codes it will be *AWESOME* !!are you on base version? i believe Eiffel made some codes for an update of that game....
based off of this (and because i cant read SD건담 지 제네레이션 제네시스, but this is what the tid pulled up)
https://tinfoil.io/Title/0100CEE0140CE000