Hello, I own this Octy II year 2004/5 and am contemplating on fitting a Bolero Audio System in a not so near future. But before doing so, I would need to upgrade my CAN Gateway to avoid the infamous "Battery Drain" issue. I'm not sure of the current version number of my CAN Gateway as I do not have access to a VCDS Cable. However, looking into ETKA, I know it should be one of 1K0 907 530 H/K/L/Q. What I want to know is, what is the latest revision of this Gateway that I can fit into mine