only got slight prob with my kingston traveller, it sometimes freezes the box screen on startup and remote doesnt work afterwards.
That shouldn't be a problem either: I always flash while the USB-stick on the rear remains there. But of course: if there are problems, remove it to be sure.If you are unable to flash box, then it is probably because you have a usb stick already plugged in tot he rear of the box. Remove ALL usb connections, and just plug your usb for flashing in. Also, ensure you have the folder format correct...