This is the email I got from GRT: I can only add that once it's been copied from the USB stick, you have it in the box and the stick is not needed until you wish to change it or do other things with it. Their stick did not work well, but another one (SanDisk Cruzer Mini) worked perfectly. I am not sure if one box can read the checklist from the other as I have not tried it yet. They say they have a manual update coming - watch the website.
h http://home.cogeco.ca/~n17hh/GRT-Email.html