have you checked out the new video C&G just put up?
also have you tried using the access point , thats a good way to test the wifi dongle before moving on to connecting to an existing network (again covered in the above video.
again check video for contents of file, but if the network name does not show, then this shows either:
a) file is in wrong place/named wrong
b) incorrect/unexpected format
(since it displays the name before any attempt is tried to connect to it… its only showing what it can find in the wifi file)
its wifi.txt, and I suspect its not created in upgrade scenarios… (though Id need to check)
also if you have any ‘odd’ characters in your password/ssid try initially (for testing only) to remove these, to see if they are causing an issue. (should be ok, but its worth testing 
)