Unrecognized filesystem type

Hello, I followed the “getting started” instructions and tried to run the hello_world.elf program. After inserting the sd card with the program I enter the bootloader menu and execute the command “fatload mmc 0:1 ${loadaddr} hello_world.elf”. Then I get the following error: “** Unrecognized filesystem type **”;
The sd card is exFAT formatted.

Thanks in advance.

exFAT is not supported. Please use FAT32.