for some info before you respond. the emulator is a 3ds cartridge called the R4, its from 2016 and the only games that it can currently emulate is the first 3 cooking mama games.
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just for some info. the emulator is inside a physical cartridge. its called the R4 and its from 2016. the only games it can emulate right now is the original 3 cooking mama games.
have you tried reinstalling your roms?
maybe you have the wrong firmware on? or maybe it's time bombed.... i have an R4 myself and solved all it's issues. reply to this and try to help in realtime! ^^