Beagle bone not booting

I tried booting a beaglebone using the following uboot commands:

setenv fdt_high 0xffffffff
mmc rescan 0
fatload mmc 0 80000000 am335x-evm.dtb
fatload mmc 0 81000000 uImage
setenv bootargs console=ttyO0,115200n8 root=/dev/nfs nfsroot=:,nolock rw mem=256M ip=dhcp
bootm 81000000 - 80000000

But it showed the error FDT and ATAGS support not compiled in - hanging . why is this error coming up??

uboot version ?