Thank you for your answer.Hello. Is the software train you listed for your unit correct? From what I have seen, 08XX firmware generally is only four digits, but the one you listed is five digits. When updating software trains, it is generally considered safe to update within the same series (for example, 08XX) and can be risky from other series (though in some cases is perfectly possible).
When updating the software train, you should not lose your coding or dataset (though of course, I cannot guarantee that nothing strange could happen). I previously updated my Delphi MST2's firmware and had no issue with the unit continuing to work with Fender audio (we didn't get Dynaudio for North American Mk7s and Mk7.5s, but it is pretty similar). In terms of picking a version to update to, you just want to make sure there is support for the version you want for your unit's specific hardware (for example, STD, Plus, Nav, etc.) for both the activator and any patch you want. There is a lot of support for EU firmware, so I do not think you will encounter an issue with respect to that.
For your VCRN question, what specifically are you trying to do with that? With the Duke and Congo activator, I do not think you actually need to worry about the VCRN as the patch should cause the unit to ignore conflicts and whatnot.
Just make sure that your car's battery is either connected to an external power source (generally preferred) or that the engine is running (I have not done this but some people say it is fine) to avoid the unit losing power during the patching process.
About CarPlay and AndroidAuto.
I found a problem with this Update firmware because a Variant Conflict. So I installed a lower version who shows having my variant.
Software is patched and runs ok, but Using mst2fecgen.mibsolution.one and ODISEleven to make the CarPlay and Android Auto launch me a error, so I installed the Firmware Upgrade for nothing.
I did a Congo and Duke patch, and I can see on my screen The Carplay and Android Auto, but when I connect the USB nothing is happening. No any reaction, just my Cel start loading the battery.
I will check now if is coding, I will see if OBDEleven can fix it.
Abouth my Navigation card problem.
Tool box could not be installed on my Unit. I will check if the installed Congo and Duke fixed. I will check out Im downloading the hole Europe 2023 V18, and will check after is done.
I will post later.