No, no need for root. Also, you can only typically update ZLINK when you update Android using Dasaita's update packages. You can't find Zlink outside of the Dasaita package, typically. Either way, your version is sufficient enough to run AA wireless.
I forget how I did it exactly, but you need to connect your phone (via USB) to your car and start Android Auto. Make sure that you are connected to your head unit via Bluetooth. Then, go into the Android Auto settings and click the toggle to connect Wirelessly. What the app will do is create a hotspot on your head unit and your phone will connect to that hotspot. Actually, connect it via USB, get it running, then disconnect the USB while the car is one and AA is running. That might launch the wireless connectivity as well.
Here is a video on it (although I don't remember having to do all of that):
Here is a link the the MCU firmware and Android update:
Warm Notice: If your system is working well, please do not upgrade it !!!Because the upgrade is risky, it might lead to CRASH, BLACK SCREEN, OR SYSTEM ERROR; Unless there is a major bug in the car system, it unable to be used normally. At this time, you can choose to upgrade the system to...
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