Hi need help, trying to find how to add an aux connection to my 2009 Octavia through the bolero head unit, on my unit I dont even have a greyed out aux input and so no aux connection  at all, can anyone give advise on what to do to add an aux connection just so I can at least play my music through my phone........thanks guys.

Same here.

I have an aux socket under my arm rest 9n my octavia. 

How about using a rf/bluetooth receiver? No need to keep plugging and un plugging evertime you get in and out of the car and will also work for hands free.