It Is hard to find the correct firmware for any one of these as so many use them with so many different kinds of hardware in, and i also think its safe to say any often are not good at releasing new firmwares for their camera.
But in general most cameras should work with a 32 Gb memory card, only if you go higher it might be a problem with some hardware and one would have to get creative to make that work.
Have you tested your memory card ? maybe in a phone or some other camera to see if it work there.
You can also run the H2testw program and test the memory card with that software.