I use layered FS to test the edit before rebuilding a .CIA if I choose to..... Use either Salty SD or Luma's built in Layered FSSorry for the double post, and idk if this is allowed to ask, but how did you manage to successfully rebuild a cia/3ds after editing the romfs? HackingToolkit gives me a 0 byte .3ds file and rebuilding it to cia then converting it to .3ds with another program does not work either since it gives me a failed to load rom (error 1) on citra. I kind of dont want to wait half an hour waiting for a cia to install just to make sure the edit I did works or not. I've used hackingtoolkit v9 and v11 and only v9 will extract it properly.