OK, so here is my 1 month update on the system. I carried out the installation myself. First time around I ordered the wrong box and got a Windows CE version with only navigation. I returned it and they exchanged it for the Android unit (Carmani ANDY).
The installation was relatively straightforward, despite the installation instructions not being very detailed and written for Evoque, not LR4. The toughest part was routing the GPS antenna. I ended up sticking it near the rear view mirror on the windshield as every attempt to route the cable through the firewall failed. There were a few gremlins with the kit I ordered. One of the wiring harness connectors had 2 wires in the wrong pins, so I had to switch those over. The unit powered up in Russian, so I had to google how to switch it to English. The vendors were responsive and attempting to help me out also.
I tapped the audio output of the ANDY unit into the wiring for the AUX Input in the central console for the second row of seats.
After the hardware installation was finally finished, I installed Waze, NavMii, Spotify, Pandora and a few other apps I use regularly. These have been mostly OK, but have crashed intermittently. When I checked the OS version of the ANDY unit, it is 4.2.2, which is pretty old and I guess is the cause of the crashing. I have been attempting to find a way to update the OS, but without success so far. The vendors told me that a few owners have managed to update it using APKs, but they will not reply to any email asking where to get these APK's from. If I can get the APKs to carry out an OS update, I think the unit will become a lot more stable.
I use my system with data from a wireless hotspot running on my iPhone 7 that is currently on IOS 11, and I need to toggle the hotspot off and on again every time I start the car. I think this is an iPhone issue rather than an ANDY issue.
In general, the system is a great concept and given more time to iron out the bugs and ability to update it, it would blow most 2017 car infotainment systems out of the water. It integrates very well with overlaying the data on the factory screen and allowing Land Rover information to come up while the Android screen is selected. However, these persistent glitches and under-powered Android hardware makes it less compelling.
Would I do it all over again? Yes, probably, now that I know how to do the installation and could get it all done first time around, but I would not do it if my car had come with the factory navigation installed.
Would I recommend someone else to install it? Only if they don't have a navigation system already and are relatively tech savvy around configuring Android systems and are willing to put up with some application hangs in order to use dynamic routing navigation like Waze, and streaming audio like Spotify.