I think you might have bought the wrong unit...

2015 Audi would use a Mobridge DA1 - not a NavTV Zen-V.

I suspect this is what you need:

DA1 MOST25 Digital Preamp - mObridge

The mObridge DA1 MOST25 Digital pre-amplifier provides a connection between the in-vehicle MOST25 infotainment system with any aftermarket DSP/amplifier containing TOSLINK input capability. It provides a TOSLINK output, and an amplifier turn on/off control. Multi-vehicle compatibility is...

mobridge.us

I'd recommend reaching out to Mobridge to confirm if your vehicle is MOST150 or MOST25.

Contact Us for Automotive Audio Solutions & Support

Reach out for inquiries about advanced automotive audio products, support, or technical assistance. We're here to help with preamps, amplifiers, and digital solutions.

mobridge.us

 

It is model facelift,have mib 2.5 navi software.
I am not sure now,when i search eweryone says that is most 150 and that i need nav zen v.
Now i am reading your install thread and i see that there is device behind glow box,i must tomorow see is there any device in my car.

 

Your vehicle will have the Bose amplifier located in the trunk (not behind the glove box).

I'm pretty certain that all 2015 Audis (even facelift) were still MOST25.
I had a 2015 Audi SQ5, and it was definitely MOST25.

 

Is there any way how can i check is it most 25 or most 150?
Here in europe is easy to find helix sdmi25,does it same job as mobridge da1?

 

Here in europe is easy to find helix sdmi25,does it same job as mobridge da1?

If you can get an SDMI25, then do it! Yes, it's the same as a DA1.

 

The helix sdmi25 is almost impossible to find in N America. But works the same a da1. Your 2015 a6 is definitely most25. See my 2014 a6 bose build.
A few guys here are looking for nav zen v
In n america facelift started in 2016

 

I am confused now😔
My car is sure facelift.
Can i see with vcds what type of most is there?
I am now afraid to buy most25 if i am not sure.

 

It's MOST25

 

I only know most25 so I cant really comment on most 150. I know 2018 a6 is 150. 2012-2015 are 25. It gets fuzzy in 2016. The mobridge site shows a list of compatabilities. What ever they show the da1 works for so will the sdmi25 will as well.
If I had access to sdmi25 I would buy them all and sell them on our marketplace. You will have no problem selling the one you dont need.

 

I have a 2015 Skoda Superb with MIB2 and I had the same issue with the Nav TV unit. Nav TV in the UK contacted the US engineers and they couldn't help, so I ended up returning it. They said it should have worked, but it didn't. Mine is definitely MOST 150.

I ended up getting a T'eyes head unit instead so I could get optical out.

 

It looks like in usa and eu is not same year for most 25 and most 150.
Symptoms in your skoda was same,you have not try another device?I am thinking that your nav and mine is broken…

 

Thats very interesting. no vag most 150 in n america till 2017.
I saw my first Skoda on our october holiday to prague. All the ubers were skoda wagons manual diesel. Great cars

 

It seems like everything in Prague was made by Skoda, the trams, drains, everything seemed to have a Skoda logo on it.

 

May as well buy local.
I didnt notice that I will have to go back. Loved the place and the beer.

 

Hi my skoda superb 2020 canton is on MOST 150, NAVTV zen 5 didn't work. Mail support but no support. I m trying to downgrade firmware 2.3.3 to lower version and see if works. Anyone tried downgrading navtv firmware?

 

I tried this today, downgrading firmware but no joy. Contacted Nav TV support UK, they advised they never managed to get it working on a Skoda and had no plans to make it a supported vehicle. They then swiftly removed Skoda as a vehicle affiliated with the product on their website. I then contacted Nav TV support in the US, tried going backwards in firmware no joy. I asked for one of their engineers to look at it as it seems to be an issue with the MOST handshake to the Skoda MIB; they couldn’t have been more disinterested and said there would be a 3-4 month wait before they’d get someone to even look at it. The appeal of the Zen was I could upgrade to a different VAG group vehicle and take the upgraded DSP and sound system with me by using the Zen getting OEM style finish every time. Unfortunately, it’s an expensive paper weight for me now and is now on eBay if anyone is after one for their VW/Audi etc which is a safe bet. Seems absurd when Skoda VW Audi etc head units are all the same hardware just reskinned UI - but what can you do.

 

You would not think vag would have so many variations. Is there skoda in australia. Maybe mobridge will develop something. Good luck. There is a member doing a 2018 a4 right now.