Please help:
I used an OBDEleven Pro to do the exact change as suggested blow, to make a Desay 187B working with Fender sound system, but I cannot modify any Byte in Radio-56. Instead I consistently got a red pop out message at the bottom of the screen saying:
[33] access authorization required, perform login
I am sure the OBDEleven app was logged in with the Pro account. What's going on here? Anywhere else I need to check?
By the way, both Fender sound system (Amp + speakers) and the 187B are retrofit. The original car came with the lowest trim (Trim S).
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4. Coding this thing?
The proper coding for the unit is
16 00 04 40 00 05
40 at block 4 enables the reverse camera.
If you have Fender change block 2 to 01. If you have Dynaudio change block 2 to 05. On either you will also have to change block 3 to 00.
I used a OBDeleven and had to go to Radio-56, switch to development mode in service to change block 2.
In all aspects of coding our NA VW's consider these to be RCD-510's and you can use the same code labels in VCDS.