Please verify you have firmware revision of 1.4 or higher. This problem was seen in earlier firmware revisions. to open the question where you can find the current version of firmware
If you are not seeing any problem with the module, there would not be a reason to upgrade the firmware version. If, however, you are seeing a problem, it would be recommended to upgrade your module.
Another possible cause of this type of indication would be a voltage spike that could be causing the module to reset. If this is the case, then it is a grounding issue. You can research this further by looking for answers using a keyword "static".
