I have a relatively new Olympus FL-600R flash attached to my E-M5 and for the life of me, cannot change the mode on the flash to TTL. I used to have this ability before. I only have three options when depressing the mode button - A, M and RC. I should also have two additional TTL modes at my disposal but I do not. I have tried changing the batteries and reset the flash's settings but still nothing. Never dropped the flash either. Could it be an inadvertent camera setting preventing this? But I highly doubt it because even with the flash detached from the camera, still no TTL option. Help please. I checked the web and can't find anything on this. I even read the manual!!!