If you've experienced that the DAB unit rejects the configuration file or forgets it, please try to update to the latest firmware version.
The majority for the 1.13 update was to handle these problems :
- In case if head unit supports iPod communication, the device does not appear on the radio as a source during the 1452nd restart - FIXED
- In rare cases configuration was lost after several restarts - FIXED
Firmware version 1.13 and upwards contains this bug-fix.