Hallo guys here a small explanation,
how to install updates and dlcs for citra on batocera ..
The first one you will need the emulator citra 3ds for windows and the updates and dlcs of the game .
The games folder will be batocera/roms/3ds .
Now on windows boot citra 3ds and install cia , choose the update to install and after install the DLCS .. now you need go to C:\Users\YOUR USER NAME\AppData\Roaming\Citra\sdmc and copy the NINTENDO3ds folder to G:\batocera\saves\3ds\citra\sdmc ... next time you boot that game on batocera will load the updates and dlcs instaled on that directory ..
i´ve tested with 3 games and works like a charm ..