It’s a paid one from ThemeForest.
Already tried that. Basically, I have a theme (typegrid11) and I want to move the jQuery script (which at the moment is in footer) in the header. I tried everything but it simply doesn’t work. However, if I use the above function for example to change the jQuery source path, it works, I see the changes. It just won’t put it in the header.
Still doesn’t work with any of them. Any ideas?