When creating your .cfg file for the USB
in notepad or wordpad look out for this little problem.
It's related to post 10 in this thread
If i create a file on my desktop computer, it has the type ".cfg"
in either wordpad or notepad. Like the one on the left.
If I do it on my laptop it creates the file ".txt" like the one on the right.
It's just the one on the left loads by USB into an F5 box no probs
but the one on the right won't read in.
Check the properties on the file you have created.
If you get this problem when you save the file, down the bottom of the
screen in notepad change the file type to "ALL"