check/flip wifi switch, take out UMD...
(the green screen prog does not care about those but MapThis requires no UMD and wifi off in the current release)
makesure that FAKEFEED=0 in the config.txt file....
Also, don't expect any reception indors.. You'll get 0 satelites and gps coordinates from latest life session...
Let me know if you continue having problems...
You cable is in fact working... It would be nice if you could post a video tutorial on how to make it... that is if you have time and want to contribute... ;-)