Buildroot for Boundary Devices Nitrogen6X: http://boundarydevices.com/products/nitrogen6x-board-imx6-arm-cortex-a9-sbc/ To install, simply copy the image to a uSD card: sudo dd if=output/images/sdcard.img of=/dev/sdX Where 'sdX' is the device node of the uSD partition. To upgrade u-boot, cancel autoboot and type: run upgradeu