I've started to think that its time to change to a DAB radio and see there are some for sale, so apart from buying a used DAB equivalent to my Concert 3, and buying the DAB aerial booster and lead, is it just a case of replacing the original AM/FM aerial booster with the DAB aerial booster and new lead which will probably be twin Fakra, copying or changing the coding and adaptions and off I go. I thought that as my car is an early 2011 B8 S4 that component protection is not relevant and if I buy a similar aged correct version of Concert 3 with DAB, this would not be an issue, but would finding the security code be an issue. In the past I have upgraded the parking to include front sensors and OPS and had no issues with that wrt component protection. Thanks in anticipation!
Edit:- I'm just curious why Audi located the AM/FM aerial booster in the RHS C pillar and the DAB aerial booster in the LHS C pillar it seems, which might imply that both aerials need to be left in place and connected?