You are able to see what versions of firmware you have on your unit by using the software apps. Below are the steps for each of the apps. In all instances the unit will need to be connected to the X3. 1. FS Golf - In the Settings screen, scroll to the bottom of the screen where you will be shown the AVR and DSP versions. 2. FS VX - In the Settings screen, click on Device Settings and scroll to the bottom of the screen where you will see Firmware version. 3. FS Skills - FS Skills - Select Settings, click on Device Settings and scroll to the bottom of the screen where you will see Firmware version. 4. FS Golf PC - Select Settings, click on Radar and the information will be displayed.