That's kinda simple.. Connect your pc to the WiFi. Then type this address on your address bar 192.168.1.1
It will ask for smartbro username and password.
The username is smartbro and the password is also smartbro.
When you open it.. On the dashboard you will see a link under cellular...
You just need to head over to my computer. Right on the My Computer icon from the right pane and choose properties from the drop down list.
Then choose Device Manager located in the right pane of the Properties.
Then right click the Mobile AT interface and update the drivers.
For those who want to unlock their M028T and are having signal issues please check this firmware from usher105 , it might work for you. I flashed it on my Busy Ghana Mifi and it's working alright.
https://drive.google.com/file/d/0B7wb9gQ7PymeaklSTXREdms1dXM/view
Credits to the kamputs...