The installation steps of DWM-222 in Ubuntu system are as follows.

Step 1 : Plug the dongle with SIM card (disable the PIN code first) into the USB port of your computer.
1.1 Check the device with command:
ls /dev/sr*
Press enter


If the system returns as follows, it means the software has been installed before.


Uninstall it with command:
cd /home
ls
sudo ./uninstall.sh   

1.2 Mount.
Use the command:
sudo mount /dev/sr0  /mnt
Press enter


1.3 Check the result of mount, using the command:
cd /mnt
  ls 
Press enter

If the system returns as above(xxx.gz instead of xxx.deb), then succeed.

Step 2 : Installation
Install the software with command:
sudo cp xxx.gz /home       
cd /home
ls
sudo tar –xf xxx.gz
ls
sudo ./install.sh        

Press enter

The installations are finished when system prompts “Install finished”.
[Notice: unplug the dongle after the installation immediately.]
[When both the device lock and PIN code are disabled, plug the dongle and it will connect to the internet automatically. The following steps are ignorable.]

Step 3 : Connect to the Internet
3.1 Unlock the device.
The default state of device lock is enabled. The users must unlock it before using the dongle.
First, check the COM ports with command:
ls /dev/tty*
Press enter


If the COM ports appear as above, the switch succeeds.
3.2 Connect to the internet.
The software will connect to the internet automatically after the device is unlocked.

3.3 Check the internet connection
1). Using command:
ping www.baidu.com   

Both URL and IP address are OK.?


2) Surfing the internet with the browsers, such as firefox.