Stratix II GX limited sof file is not working

Hi, I am doing a project that uses Stratix II GX, currently, I can use the pof file from the example to run the hardware.

The pof is loaded to the EPM570 device, I used windriver to test the hardware, everything is ok, pc can detect the device, and do read and write.

However, when I try to download the limited time sof file into the FPGA, I think PC is not detecting the hardware.

The live led is not flashing, which means the clk coming out of PCIE block is not initialed at all.

but it's a ref design, not my own, it's from the pcie compiler 2.1 package.

it passes tcl script check, timing check and modelsim simulation.

Did I do something wrong?

I had played various version of PCIE ref desgin, like PCIE-DMA, PCIE-DDR, they all have same problem, no working on PC.

just wondering what I did wrong, did I download to the wrong device? is there any special requirement on using the limited sof file??

Hope anyone can help.