downgrade GX450

Hi gtsang,
Thanks for your attention!
I want to do that because of with 4.5.1, I could establish the TCP connection to it’s 9494 port to get a snapshot of the GPS data, from when I upgraded it to ALEOS 4.8.0, that function doesn’t work any more, the connection is closed immediately right after it’s openned! And in waiting for the Sierra Tech. Suport Team fix that problem, I wanna do that to continue my tests!
Have you got any experience about that issue?
Thanks and best regards!
datuan2008.