Thank a lot, hyperion
The new W580i is successfully debranded with set of files, that you, hyperion, suggested.
I had to use setool2 lite edition v 1.08, after first attempted with XS++ 3.1, but didn't find the W580 model as a choice for custom files. Even though with setools2 it works, I'd like to know why W580 is not a listed (pop-down menu) option on XS++ 3.1?
And now, there is another thing - unlocking this debranded W580i. Should I ask such question under another topic?