Div amp is for the Radio.
I see an SES jumper plug, and a 25 pin DB25. You have what looks like FME cables running for the Bluetooth RF from console to trunk, rather than the later FAKRA
You need a DB25 to 54 pin adaptor, a Bluetooth antenna, a ULF/TCU, and a ~25cm FAKRA cable and mount the antenna above the nav drive.
http://www.bimmernav.com/BMW_X5_Blue...tructions.html