This is a common problem that a lot of people encounter. This is caused by an update that has some problems. To fix them, make sure that you are using the latest updates for your phone. To do this, go to its menu > Settings > About > Software Update > Update. You should have your phone charged at least for 80 % because of the large files that can be downloaded. Also, make sure that you have the latest version of EasyTether installed. To obtain a download link for the application, check the review page of the application on Software Informer. You should be able to overcome this problem.