D-Premier that won't read SD Card to load firmware

[Rufus McDufus]

Make sure the unit is either unplugged from the mains (as f1eng mentions) before you put the SD card in and power up, or if it's like Experts (which it probably is) you can press the front power button for about 5 seconds or so and it should start the update.

Another possibility is if the SD card reader isn't working... This isn't totally unheard of unfortunately.