In order to get your data connection running again you have to use Total Commander and delete the HTC_CM_Guardian.exe file and replace it with a dummy file. Then you have to use QPST and save the current setting to file so you can a have a backup of the current settings on the phone. After those current settings are saved. You proceed by only changing the M.IP and PPP settings. The reason you cant get data connection running is because the password is stored in these settings so every time you try to connect it reads wrong user name or password. In HDR you have to change the settings as never locked because those previous password are shared or locked in. In MIP settings you have to edit the settings to your phone
number@serviceprovider.net or com and type in your password. Also you have to clear the HA and AAA shared secret values to display nothing so the original password is cleared. You need to know the server addresses as well so they can be edited also. Save your settings to file and write to phone. The use ##778 talk and use EPST. Choose the edit setting and go to security. HDR user id is your phone
number@serviceprovider.net and the HDR password is your phone ESN. In PPP user id enter you phone
number@serviceprovider.net and the password is the same as the one you use when you try to log on to the cellular line usually the service provider name like mines is "alltel". Then go to the MIP default profile. The NAI is your phone
number@serviceprovider.net Primary and Secondary HA is the server address that you entered in QPST if you know them. The HA Shared secret is your ESN and the AAA shared secret is the same as the one you use when you try to log on to the cellular line usually the service provider name like mines is "alltel". You have to use these same settings in all of the MIP profiles to match. I dont know what you server settings are because I'm an Alltel user with a Sprint Phone but I saved my Sprint settings for anyone who has Sprint and no data connection...or vice versa. But as i spent 3 weeks working Alltel for answers and trouble shooting the problems myself. I am 99% sure this is the method of retrieving your lost data connection and Please be sure to type the phone ESN in CAPS. If you want real time support on this issue you can contact me on yahoo messenger. My screen name is seraphazaziel79.