Wow I tried the hotspot one on its own before, will be turning this on, have plans to turn a rasp pi zero into a wireless music player from a usb hard drive as I am fed up with the normal system loosing connection to the hard disk and its inability to show the full collection of music on the hard disk. Bluetooth and the pi seems to be a little badly set up at the moment.
Yeah, now you can use DLNA over WLAN


So far, here are my findings (to get back on topic) so far:
- WLAN is on same chip as bluetooth and is available in all Discover Pro devices. (the exact opposite of what VW/Audi keeps on telling us!!!)
- Developer menu can be enabled through Adaptation.
- Developer menu can be opened by holding MENU for ~20 seconds
- Screenshots can be made by pushing the right button, once developer-menu is enabled
- Overlay view of screen elements can be enabled by pushing and holding CAR button, once developer-menu is enabled
- Overlay view of screen data/names can be enabled by pushing and holding TRAFFIC button, once developer-menu is enabled
- Skin can be changed through Debug options in Developer menu
- Loudness can be disabled through the Green menu in the Developer menu
- Mirrorlink button in main menu can be enabled through Debug options in Developer menu
- WLAN is available after enabling Phone NAD bit in long coding(which enabled Premium Phone)
- DLNA is available after enabling WLAN (this is port 49152)
- Wlan packets can be sniffed and saved to SD through the Green menu in the Developer menu
Some screenshots I took:
The Developer menu:
The "Green" menu:

The Mirror link button in the main menu (non functional):

This is inside the glove-box part of the Discover Pro. The upper right area is reserved for the premium Phone module. Those two connectors at the bottom are named "HDD" and "MMX", but I don't know this industry standard so I wouldn't know how to connect to them. I didn't find the solid state drive... it's probably on that nvidea board

Googling for chip numbers, here's what I found as well:
http://electronics360.globalspec.com/article/3337/audi-mib-high-8v0035021-mib-processing-unit-infotainment-teardown