Click the "Firmware" icon. Even on version 1.6, it is vital to have the latest firmware on the physical plug to avoid "Device Not Found" errors in your diagnostic software.
For the end-user, the command to "Download Vx Manager 1.6" is often the fix for a dead diagnostic tool.
The latest software and legacy versions can typically be found through official portals like the VXDIAG Download Center or manufacturers like ALLSCANNER direct download links for VX Manager 1.6 or instructions for a specific vehicle brand