Is there a command to enable/disable the usb slot.I have tried to flash an image loads of times using different usb stix but the sf8 just loads normally with tv channels.I have also gone into the image manager set-up and tried to change location from..../flash/hdd to /flash/usb using the arrow buttons but it will not change from hdd it seems to not recognise the usb slot.i have been using the vix tutorials with the latest flash and i have a octogon sf8.Any suggestions.Thanks.