I have re-flashed in the past but for some reason I can't get it to work this time around. So I have the latest firmware extracted to the top level of my SD card (actually it is a blank 4GB card), I put that card in the left SD slot and held down the right shoulder button while I started my Pandora up. Nothing happens, just a blank screen. To get it to boot up normally I have to remove the battery. Any ideas?