new and need help
 

2004 x3 2.5 6 speed
my GPS will not activate it just goes to a screen that asks me to choose a file folder... do I need to update it and if so how? Also it has a USB cable and when a drive is hooked up it recognizes the media and plays it but no sound comes out is it supposed to come out through the radio? Can I hook up an aux cable?

Has anyone done a small lift on these bigger tires... nothing insane just slightly more room for bigger tires also anyone done any light bars up top or on the front bumper?