You need to test EOBD on the car for free before. And if ok, I'll make full.
Also, you need to forget about the original app, because if you'll try to use it, in this way, Diagzone won't work.
For update soft you need:
Download the program - https://bitly.su/Launch-DZ
Install it on your Android phone/tablet
Write login 968590145763 password 968590145763
Choose on menu Update - go to the second tab (flip the screen with your finger) and download EOBD
Choose on menu About me - Update firmware - Update (Launch must be connected to the car)
After this, you can use your Launch.