@Pandaxclone2 Now I have installed "dosbox_libretro" but I can not use the C-Stick anyway? Could you explain it to me step by step? I'm sorry, I'm new to the homebrew/ cfw scene ...
I took a look at the rail and noticed that the two last pins were soldered for some reason, luckly I still had the rail of my broken joycon so after I swapped them I was able to use it attached to the console