You’ll need a "dump" of your own Flipnote Studio 3D software (it was delisted from the eShop in 2023). Why it works:
Leo spent the night animating a frog jumping across a digital pond. He couldn't upload it to the long-gone Flipnote Hatena , but he didn't care. He exported the GIF and sent it to his old 3DS friends. flipnote studio 3d android
: Transfer files from the 3DS SD card (found in private/DS/app ) to a computer, then move them to your phone via cloud storage or a cable. You’ll need a "dump" of your own Flipnote