From the main screen (with the label, battery level, etc.), click on button #2 (the one near the bottom of the display) twice. This will bring up the regulatory screen with information such as our CC ID. Find the line that indicates "FW:". The information following this is your firmware version. For example, you may see:
This firmware version embeds the date that it was compiled. In this case, April 13th, 2017. Typically, this date is all of the information that is required by our support staff when they request your firmware version.