BPI-R64 OpenMPTCPRouter

Hi, I am trying to run OMR on R64 but running into problems. I tried to run the prepared images with the help of ready-made images from the SD card. U-boot starts, but clicking on Load production from SD ends up trying to download the image via tFtp, which is strange - since the image should be on the SD card. The attempt to run the Initramfs image also failed, but when I uploaded sdcardimage.img and ordered initramfs to be downloaded via tFtp - there were no problems.

Does anyone know how to run OpenMPTcpRouter from eMMC memory or SD card?