I had the same problem. I dragged it directly from the downloaded ZIP folder to the drive, which didn't work. What worked for me was first dragging the file from the ZIP folder to the desktop, and then from there onto the USB driveI'm unable to get the firmware update to install. Mine is currently running version1.57 (or so I believe as I'm not currently home to confirm). I have followed the steps to update firmware and have tried coppying both V1.69 and V1.72 (not at the same time, obviously) into the created drive, however nothing happens. The "Topping File" just shows in the drive