Have had their security encryption stripped away. This makes the data readable by PC-based emulators and simplifies the installation process on modified systems.
Find the corresponding DLC CIA files (usually containing all updates). aikatsu my no1 stage dlc decrypted 3ds jp exclusive
Copy your decrypted Aikatsu! My No.1 Stage! base game .cia and the decrypted DLC .cia into the folder. Have had their security encryption stripped away
significantly expands the experience with fan-favorite tracks and additional gameplay modes. Aikatsu Wiki DLC Content Overview as CFW bypasses region locks.
Can't install DLC because encrypted, but decrypt isn't working? : r/Citra 14 Apr 2019 —
Do you currently have installed on your device?
The system must run Luma3DS and Boot9Strap. The physical region of the 3DS does not matter once CFW is installed, as CFW bypasses region locks.