can any one help me i can't down load any of my favorite guitar players presets,do i do it manually on my phone or what i got how the USB gets the music from my library,but every time i pair my phone with my marshall it stays on for one preset i can't even reconize so i play all my music songs pink floyd led zepplin SRV JIMI H On simple clean setting what the  ,and futher more at a guitarist presets he might have used at the left bottom corner there is 4 or 5 boxes,phone box amp box and stupid finger sign and so on but i get a stop sign code when i click on the little amp .i can play little wing and basically with an amp that should tell you more i guess its not the amp or the guitar you have its the size of the theory of how your soul connects with the vibe.help if you can