How to instal modem Smartfren on ubuntu

Hello,. i have a modem smartfren AC862 and i confused how to instal my modem on ubuntu.
after i looking for some information from my friends,i finally find how tips to instal modem smartfren.
try to follow step below :

1. please download this aplication before instaling
    Download here
2. Extrack file and  then place the file in your home folder
3. Running to terminal and enter the following code
    (-$ sudo dpkg -i *.deb)
4.  After the installation is complete, connect the modem to the computer



5. And enter the code again in a terminal
 - $ lsusb
 -$ sudo eject/dev/sr1
 -$ sudo modprobe usbserial vendor=0x19d2 product=0xffdd
 -$ sudo wvidialconf
 -$ sudo gedit/etc/wvdial.conf
6. And then check  the modem status with enter the code  -$ lsusb
7. Then will any posts appear

8. Save and close
9. Connect to the internet, enter code -$ sudo wvidial smart
10. I hope useful