Yes, you have 2 firmwares available for your specified FPGA chip, the old newest one and the very newest oneSo the version choice is made at the point of installation?
You can check which one you have now within your DENAFRIPS app

This is the old newest version of the firmware
Best to send Alvin a photo of your FPGA Chip and date of purchase.
If you are in doubt do as Mr. PoMarantz says