You can open the flashcard without reinserting it via TWiLightMenu++, or using this app (https://gbatemp.net/threads/twl-slot-1-launcher-first-custom-dsiware-app.414501/). Just open the app and it'll boot.
Apparently, my 3DS has to be TWL_FIRM patched and I don't desire to do so. Out of simple personal reasons. So the app doesn't really works for me. :/i prefer https://gbatemp.net/threads/twl-slot-1-launcher-first-custom-dsiware-app.414501/ https://archive.org/download/TWLSlot1LauncherV3 to launch my flashcard (faaar less bloat then the twilight menu).











