it was connect correctly before when i use win xp system. now i've change to win 7, and install the drivers successfully. system can recogonize the phone, but it's a ADB device in the device manager, and can't connect to NPS. I've tried the method here about the connection. Anyone has met this problem and solved? Would you help me. my phone system ver is zhil3 and win 7 utilmate simplify chinese. thank you brothers.