I didn't ignore you; X-flash is what I have been using to flash the ROMs, and is what I used to put Caetla on my standard Xplorer. And that site is the place that I searched first when looking for the correct ROM, before posting this thread. Caetla does indeed work fine on this 256kb Xplorer FX, but I just wanted another working Xplorer FX cartridge with the nice extra features over the standard one, since my mother disposed of my last one... :crying: