Problem Solved. I'm an idiot. I've still got the original firmware on my 50d. when i tried updating it, i formatted the card with my camera, then used my printer (w/ built in card reader) as a card reader to put the 1.3xxx (whatever) firmware update file on the card. When i plug the card back into the camera and go to the firmware update through the menu, it gives me a warning that there is no new firmware to update to. I plug in the USB to the camera, open it up as if it were any other drive, and the file is still sitting there... Suggestions? where am i going wrong? *edit: Idiot plus camera settings = lose. Better state of mind + closer attention = win.