I purchased an Alibaba kit for B8.5 Audi A5 in November, and finally installed it in March. This is listed as a CarSight Store Wireless Apple CarPlay for Audi, and it is working perfectly. I have an MMI 3GP, so fitting all the cables and the black box behind the MMI unit was, shall we say, "fun"... With patience and without gorilla tactics, it went in and all dash components clicked back in place as if nothing had happened.
Now, seeing other people talking about Firmware updates and such, the numbers being shared are completely different to what this seller and unit show. I started with the following:
SD Version 25.0.0.5.6.0.0
CUST Version v2.0.2.4.gp.a
MCU Version 19.8.15.17
I asked the CarSight people if these were up to date, and I was given back a RAR file for CUST v2.0.2.7.gp.a and I applied that successfully. I asked about the MCU (not sure what exactly that is for) and the seller said it was fine. However out at another vendor site, I found what looks like the identical devcice and they listed an MCU 20.4.3.11
Can anyone explain all these, and are there any FAQ or ReadMe somewhere to know what they fix or add, to determine whether I should apply them?