Good to see you guys are getting headways with this. Since the VW group switched to the MIB3 without over the air updates like other markets support to do it your self have been very poorly communicated to not only owners but the dealer network.
Some additional tips I have found with the T-Roc:
Grab yourself a dual drive USB stick, I went with a
Sandisk Ultra Type C. That way you can plug it into your computer directly, fill it up and then plug it into the USB-C slot of the vehicle. I found that using an adapter could sometimes be hit or miss.
The MIB3 maps on the
VW map update page are the same across various models - Golf 8, Passat, T-Cross, T-Roc, Tiguan from 2020. Discover Pro or Discover Media are the same files.
If you are not seeing any action with your update via the USB-C than leave it in the slot for a couple of days driving, as it will do its magic behind the scenes.
Now the next big task - trying to activate live traffic reports. This damm MIB3 does not support FM radio RDS via Suna anymore. It is delivered via the web.
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