p.1 #2 · how do I check firmware ver. on Fuji 35 1.4
Insert a blank formatted media in the camera. Turn on your "Camera" while holding down the [DISP/BACK] button. The number will displayed "CURRENT" showing the camera's current firmware version.
After checking the firmware version, press the [MENU/OK] button and then turn off your camera.
p.1 #3 · how do I check firmware ver. on Fuji 35 1.4
You don't actually have to format the card to check. I think it's just a precaution... so that you don't accidentally flash something that's not a firmware file (that'd be bad, but one would hope the camera runs a check on any potential firmware before flashing-- checking for a key).