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I use Dell Precision M70 with bluetooth 350. I installed the newest bluetooth drive I got from dell.com and I updated my phone's firmware to 1.12(sprint). if I added my laptop as a trused device in my treo 650, I always have connection failed problem when I tried to add DUN in my laptop. after I deleted my laptop name in my phone, I can setup the DUN. but there is error during setuping. first, I have to input the pin at my phone, then there is a window pop out, let me input the pin in my laptop, but just 1 second, the window is gone, and have a error message said "connection failed", then pop up the pin window again, after I input the pin in my laptop, I have to input this pin again in my phone. finally I got the connection in my laptop. but it does not work. when I click this connection, it told me "no modem, or off, or not install" something like that.
after I removed the bluetooth drive in my laptop, I can setup the connection, but it keeps asking me the pin every time I want to conncet the phone from my laptop.
I called the dell customer support, they told me reinstall the XP windows. after I install windows XP proffesional + SP2, everything is same. and they replace the bluetooth module, replace the motherboard, everything is same. I spent hours and hours to try to make it work, but it did not work.
I used another USB bluetooth adapter, it works perfectly after I removed the Dell bluetooth driver, then install the drive came with that USB adapter. I checked my email, browse internet from my laptop using this USB bluetooth connecting to my Treo 650.
I do not know it is Dell's problem or Treo's problem. but It is a problem.
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