That makes more sense then. I wonder how much room the Axe III really has left in it then. I guess whatever the firmware chip size minus the firmware file size. I'm sure it's a lot.What a lot of people dont understand though is that amp models are different memory than the actual modeling. You can throw like a million amp models in there and it wouldn't matter much in terms of space, because (as I understand it), they are basically a list of parameters that tell the actual modeling what to do. Removing amp models does not free up space. IRs are in different memory as well, and removing those does not free up space for more firmware. They are all different things. The core code that is taking up all the memory is all the Math that drives how the modeling is accomplished. The core Math that models how a resistor works, how a capacitor works, how a Tube works, etc.....
EDIT: Let me end with.... "As I understand it from Fractal posts through the years, I assume this is what is happening, as no one really knows other than Cliff...."