Cyclone V SoC GSRD precompiled SD boot failure

Hello all,
I have recently tried to execute the GSRD on the Cyclone V SoC (https://www.rocketboards.org/foswiki/Documentation/CycloneVSoCGSRD) , the first step is to boot a precompiled SD image.

I have downloaded the https://releases.rocketboards.org/2022.11/gsrd/c5_gsrd/sdimage.tar.gz and flashed an SD card as explained in the Windows chapter.

I than tried to boot the board.

Seems like the load of the FPGA is failed in u-boot with the following error message: "Command 'load' failed: Error -6"

The u-boot then exists, kernel is starting and at some point the board resets and the boot sequence re-initiated.

I then removed the FPGA load lines in u-boot.scr, stopped manually in u-boot, flashed the FPGA via JTAG and continued to the kernel boot, It was successful and I had a running Linux prompt with a loaded FPGA.

when running the u-boot commands to load the FPGA:

load mmc 0:1 ${loadaddr} soc_system.rbf;
fpga load 0 ${loadaddr} $filesize;

the error messege "Command 'load' failed: Error -6" appears, even with other rbf files.

Since this is the precompiled SD image from Intel it seems like something is very strange

Also, in other SD images the FPGA load from u-boot was successful so I assume its not a board issue.

Has anyone experienced such issues?