Hello JINXJINXSEN,
Thank you so much for answering with the explanation of what you have done.
I downloaded the Fiddler 4 and tried what you described, but nothing changed, maybe you forgot a step or I'm doing something wrong. If you could double check the steps, maybe you did something else before?
About the ticket to Line 6, I already did it as mentioned in my first post above this, and I encouraged all the people I know with the same problem on the Facebook groups I belong. Now I'm thinking about sending and email to Yamaha customer service in London (where I live), to see if they can contact Line 6 department and ask what are they doing about this issue.
Thanks for all your time an effort! Hope to get more news from you.
Kind regards,
Ivan.