Hi everyone,

 

I've just bought a used avic-930bt and is currently on software version 4.0, i read i need to update to 4.6 for iphone lightening cable first and then i can update to version 6.0.

 

is this true or can i just go straight to 6.0?

 

my iphone 5s when connected has no sound through the stereo but displaye songs? artwork etc

 

thanks