Symptom: The BLX rover on the users S3 is not communicating with the A321 base station.
Cause: The S3 needs the firmware upgraded to support the BLX rover communication to the A321.
Resolution: The S3 firmware needs to be updated to the Crescent firmware Qd via the 9 pin serial cable. Once the S3 is updated it can be verified by pressing the "Satellite" icon and the firmware should read 6.8Qd in WAAS and 1.2Qd in RTK. Select RTK mode the set the "Radio ID" the same as the A321 on the BLX rover.