1. No easy way... you can guess based on production date. Version 27.x.x usually. Also see if you get the option for rear camera and PDC split view.. this is featured in one of the latest releases.
2. Sorry No idea... the Sat Nav is pretty ordinary overall - powered by Whereis maps which I find are lacking!!
3. Haven't had this problem
4. It does get nice and hot although I haven't found it a problem when driving.. I use a sun screen when parked to keep it cool as well.
5. Yep lots of dust!!..it settles down a bit after 5000k
6. I find my radio reception in Sydney a bit rough at times.. did you get window tinting on your car ...? I have it and think that may be the cause as I am not sure it's a ceramic tint or not (rather than metallic).