If you cant us a USB drive then the other option is to use a pc... I use a laptop with an VGA to HDMI adapter as my laptop doesn't come natively with HDMI out. But anyways, I play the 3D file from laptop to TV... it displays a side by side video image and then from the TV remote I select 3D at which point an option comes up asking what type of 3D video is being played.
example: Side By Side, Up Down, or Sensio 3D. Put on my polarized glasses and enjoy