Problem with LGFlash Tool 1.2

Hello!

I'm having some problems with LGFlash Tool 1.2. I have the correct .DLL and .DZ file for my phone, the version of LGFlash Tool is also compatible.

This is what I'm doing:

1. Start LGFlash Tool 1.2
2. Select .DLL file
3. Select S/W file (.DZ)
4. Select USB in connection mode
5. Hit OK
6. Go to port settings
7. Select all 16 ports
8. Connect phone in recovery mode
9. Hit Start
10. After a few seconds all ports return READY!! but nothing is happening on any of them

Could someone please tell me what exactly am I doing wrong?

Thanks for any help!