Hi, Simon    I find a guild in mainline uboot code, which updated by you.  This guild is for chromebook_jerry, can it apply to Flip C100p (minnie)?    If it can apply to minnie, my understanding are:  Build u-boot-spl-dtb.bin and u-boot-dtb.img from mainline uboot, and replace jerry binary in the command line. Then flash it to minnie’s SPI flash with dediprog.  when reboot minnie, I will get uboot command line interface, and can access it by uart port.  Then boot mainline linux kernel, from external storage. And finally repartition internal emmc, and build a Linux OS to emmc.  Are they right?    BR.  Ning.