Thanks to some people in the forum, I now have custom firmware properly working on my O3DSXL with the 9.2 downgrade as my sysNAND and 10.4 on my emuNAND. I've got fbi properly working, which wasn't before, and my health and safety app has magically reappeared for my emuNAND. I've hit where I was before. I wanted to install GBA conversions onto this but as I understand it you require a patch on the sysnand and (as I am unlinked), the games to be installed on the SD and NAND? I really don't want to mess this up like I did last time! Can it all be done through fbi on the emuNAND if I change the directory to NAND as I install? With cakes, I got black screens, will this work with rxtools?