Hi I have an s6 for work as it broke so I bought a second hand replacement. The usb doesn't work. Or rather it doesn't connect to pc. It charges ok with the original cable but when I plug into usb port on pc it doesn't show as device which means I can't re install factory firmware. It would seem the incorrect firmware is causing issues with usb. Is there a way of installing firmware with a usb connection? Via WiFi , app or maybe Dropbox or something similar? Tia. Ian
