I'm struggling with this keyboard. It's an amazing instrument, but I feel it's support tool (casio sample manager) and it's USB support couldn't possibly be worse and are a straight PITA.
For now, I'm struggling to load ZTN files to it. I put them in the USB and when I can't seem to find a way to load them in the keyboard unless I have a PC and load Casio Sample manager, create a tone and trick the keyboard into thinking the tone I'm sending is the one I created in Sample Manager.
Apart of that, Sample Manager can't recognize any tone I download from the internet and sometimes even the ones I've created myself.
Also, I tried finding help in the manuals but they seem not to have a section explaining how to load ZTN files from a pen drive.