POI Company Logos on Discovery Pro Navigation System

[cxygn]

I recently got a new 2018 Tiguan with the R-Line package. I went through a 90 minute induction/training session when I picked up the vehicle, which I enjoyed and learnt a lot from. When I got home I updated the Radio Station Logos so they had a black background, which looks great on the dash - I'm usually pretty tech-savvy, and found that pretty easy (with some help from PhotoShop).

I noticed that on the navigation system, when you drive past McDonalds, Pizza Hut, or a VW Center, their company logo shows up.

<See how the McDonalds shows up (there is actually only one there tho... on the left) - that is what I want for BP etc.>

I want to know how I can make the maps show other company logos, like BP, Shell, KFC, Woolies, Coles, 7-Eleven etc.

I asked my service center about this at the 1,500 check-up, and they updated my maps - except now everything seems to show up on the wrong side of the road, or in a weird location (like 300m away from where it actually is). I've investigated the DiscoveryCare app, but it wouldn't let me choose USB as an option, and my SD Card was the wrong format (also, I don't think that the program will actually allow me to change/customise the POI logos for these locations/categories).

I'm in Melbourne and would really love it if someone had some suggestions of what I could do to achieve this! (I also want to add the speed cameras/red-light cameras into my nav system, but there are other threads to help with that ^_^)