Tried both those methods Mr C, neither work,probably due to the firmware,looking at the dates of those posts must be early versions mine is version 3.55 I think,possibly the access codes have been changed there is a way of uploading and backdating version 3.15,which is the one the service menu can be accessed in those ways and the usb enabled but it looks a tad dodgy to me so I wont bother.
Thanks for the help chaps.