I recently acquired an lgv60 from a family member. They bought it new but didnt like it so it sat for awhile. I love the phone to death but I want to connect to a midi controller to use with and app Hexen I use. I went into dev options to go select usb configuration and the window opens for a fraction of a second before vanishing. I cant change it at all. My older phone connects fine to the midi controller and my buddies lgv60 even connects to the same controller just fine. Anyway to deduce the issue?