Fast way to decode VAG group RNS510 navigations:

1T0035680A / 7L6035680A / 1Z0035680A / 5P0035680A
1T0035680B / 7L6035680B / 3T0035680
1T0035680B / 3C0035680C / 7L6035680B
1T0035680C / 1T0035680C / 7L6035680C / 3T0035680A / 7F0035680 / 7E0035680

How:

- Connect power supply to RNS510 navigation, but not switch "ON";
- Connect CarProg (need RNS510 adapter for CarProg included in set) to RNS510 26pin black connector;
- Press "Activate Edit Mode" and follow instruction.

You can change (not read - only change!) security PIN code, change SN.