Sometimes I think the pictures explain better than words, so here you can see what I did, and amazingly it is working!
The connector for the pins J40 and J41 are unavailable in stores around me and I have no time to wait for me to come by mail, then with the help of my friend Stefano, who has paid attention welding the wires directly on the board, I ran this change, bringing out the inputs for MIC and LINE-IN-OUT.