I use one of the Play Store apps to get into Developer options and it does show an ADB debugging option and most of the other choices available in a typical Developer's menu. The one I use is the first one that comes up in the search on play store, I think the author is Singlebyte.
Update. I changed USB logging. But two laptops, 2 cables and 4 USB cables coming out of the head unit, and I still was unable to see adb devices anything.
First off a big thanks to the guys at 4pda (http://4pda.ru/forum/index.php?showtopic=938749&st=60#entry82238521) for doing all the hard work, I'm just writing this post as a guide for those who don't speak Russian - like myself :) Second thanks...
However, feeling invincible and comparing their boot.img to their patched IMG file (5kb difference) I tried to root my head unit using the Joying patch.
It didn't brick anything but it also didn't do anything positive. Radio doesn't work and big red letters are stuck across my screen.
I'll revert back using the Atoto firmware tomorrow.