After failed several times. I decided to hard reset the device (sprint 6.5 OEM ROM) and install Tom Condon Wifi VGA cab for wireless connection via Sprint (from above link) --> this does not work. It connects and data seems transferring when I look at my PC, the internet works for 30 seconds and stop after that (both PC and phone). I install the
Calkulin WM 6.5 tethering fix cab and it was the same result. I have no problem having connected or connecting to the PC (btw tried different PC too with the same issue).
I do not have any other cab installed. I feel like want to go back to 6.1. BTW I download the 6.5 from HTC website.