Haven't really posted but I use this fourm for research, thanks in advance. I have been trying to upgrade my stock stereo system on my 2010 550i and I thought I had found my direction. I have the standard (no speakers in rear doors) system. I was going to get the BSW speaker upgrade and either change the two subs under the seats with SWS 8's and a mono amp for the subs, or a trunk sub placement and amp. BSW told me they only have a replacement kit for up to 09. Did BMW change the audio from 09? I know they added the hard drive navigation, but I was unaware of any other electronic changes. Any help would be appreciated.