vagrant@vagrant-ubuntu-trusty-32:~/CHIP-tools$ BUILDROOT_OUTPUT_DIR=../CHIP-buildroot/output ./chip-fel-flash.sh
BUILDROOT_OUTPUT_DIR = ../CHIP-buildroot/output
stat: cannot stat ‘../CHIP-buildroot/output/images/rootfs.ubi’: No such file or directory
== preparing images ==
ERROR: can not read ../CHIP-buildroot/output/images/sunxi-spl-with-ecc.bin