Stratix III FPGA development kit

Hello!

I am currently facing an unusual issue when trying to use the Stratix III FPGA Development Kit. After installing Quartus II 13.1 Subscription Edition (the last version supporting the Stratix III family) along with the respective device files (.qdz) for Cyclone, Arria, and Stratix III, and properly configuring the license on Windows 11, the Stratix III family does not appear in the device selection wizard. Interestingly, the Quartus Device Installer states that the family is already installed, but it remains hidden inside the software.

To isolate the issue, I have tested multiple operating systems and Quartus versions, but the problem persists:

1) Windows 11 & Windows 7 (Quartus II 13.1, 13.0, and 12.1 Subscription): Arria and Cyclone families work perfectly. Stratix III shows as installed in the device manager but is unavailable inside Quartus.

2) Windows 7 (Quartus II 9.0 Web Edition): The Stratix III family appears in the family selection menu in Quartus, but our specific device (EP3SL150F1152) is listed as unsupported.

3) Ubuntu 12.04 (Quartus II 13.1 Subscription): Same behavior as Windows; the installer claims it is there, but Quartus does not show it.

Given these cross-platform results, I suspect the root cause might be:

1) A corrupted or flawed Stratix III device installer file (.qdz).

2) A licensing restriction, where our current license might need a specific feature enabled for the Stratix III family, even though the software allows the installation.

I have already tried renaming the device installation file, but the Quartus 13.1 device installer does not accept any name other than "stratixiv-13.1.0.162.qdz". When I use this default name, a window appears with the checkboxes ticked for the Stratix III family (indicating it is already installed). I cannot uncheck these boxes to uninstall only this specific family. I was also careful to place the .qdz file inside a folder with a simple name—without spaces or special characters—as I am aware of this classic Quartus 13.1 bug. Even so, nothing seems to solve the problem, and I am truly at a loss as to what might be going wrong. I am happy to make my machine available for you to take a closer look at the issue using TeamViewer, AnyDesk, or any other remote access tool.

Could you please guide me on how to get this Stratix III Development Kit operational (which features the EP3SL150F1152 device)?"

Thank you for your time and assistance. I look forward to your guidance.

Best regards!