Questions about U-Boot customization

In Development Guide 28.2 Release,section:U-Boot customization,
When compiled U-Boot,we need copy to “/Linux_for_Tegra/bootloader//<board_and_rev>”,
which <board_and_rev> is p2771-0000-500 for Jetson TX2/TX2i,
but I can only find /p2771-0000/000 and /p2771-0000/500, without /p2771-0000-500,
which folder should I copy to?

Please just put it under p2771-0000/500.