To help you appropriately, I can offer the following:
For most users, the setup software is pre-loaded onto the device itself. However, if you need a fresh installation or an update, you can find the official software through several channels: dcom 35g movitel download setup link
Check the LED indicator on the Dcom. A blinking green or blue light usually indicates it is searching for or connected to a 2G/3G network. To help you appropriately, I can offer the